Re-formatting the story, in sorry if there's a conundrum of "updates".
-time skip brought to you by... VATICAN CAMEOS! Vote if you ducked, right? Right? No? Oh well.-
It was nearly ready. A few finishing details, and James' best plan ever would be finished. No, not the Sherlock plans. Those were already in action, and sure it was entertaining watching the detective and his hedge-hog lover dance, but today was the day for something he'd never done before.
Ah, ah, ah, ah- Stayin' Alive, Stayin' Alive!
He scrambled to grab his phone, immediately hitting the green button, lifting the shiny black iPhone to his ear.
"Moran, how is everything coming over there?" He whispered into the receiver, listening for  the sound of footsteps coming down. He snuck a glance at the clock. 2 am. He only had a couple hours before you'd wake up. Everything had to be done before then, not only that, but they had to be absolutely perfect. For the first time since he was a kid, he was absolutely, 110% (he didn't even know how it was possible, but it managed to be) terrified.
"Yeah, it is. And Boss?" James continued running around, following each direction he planned out to a 'T'.
"Yes, Moran? What is it?" Even a second was too much to spare if unneeded. He wasn't worried much about how the game with the youngest Holmes was going, but he had no clue where to begin with this.
"Try and calm down. It's an anniversary, not rocket science. You're already taking this to an extreme." James stopped for a moment, and took a deep breath. Maybe Sebastian was right. He needed to calm down, and relax a bit. Today was supposed to be a good day, after all. He even took this day off of work. Something he didn't even do on most holidays.
"Maybe you're right..." He slowly moved to sit down, inhaling deeply while checking over the to-do list. Without warning there was a shuffling heard upstairs. Why is she awake already?! He desperately ran to hide the progress he'd made, not allowing any eyes to view until it was complete, before meeting you at the foyer's steps. Ready to go...
"Where're you going?" He asked as you met him, he didn't think the question through, though, and said it hurried and worriedly. The clear signs of dismay made you chuckle a bit. He put his hands on your hips as he took you in, looking for any clues to what you were planning. Your hands decided to rest on his chest/shoulder area.
"Out." You said as if it were some top secret. He narrowed his eyes in a playful manner, scrunching his face up.
"Out where?" You laughed again, shaking your head slightly.
"On the town." He sighed, knowing it'd be impossible for him to stop you.
"And, who said..." He pecked your lips quickly.
"You..." He repeated the action on your cheek, and you struggled a bit, but he refused to let you go.
"Could..." He planted a kiss on your other cheek, just on the corner of your mouth.
"Do..." This timer was on your jaw line, and he had to pull you even closer to stop you from escaping.
"That?" He returned to your lips, pecking quickly, but leaving his forehead connected to yours. You both still laughing.
"I did." You said quaintly, knowing he would find the answer both smart, and sexy for that matter.
"Well, I lose time with you, so I think I deserve something in return!" His over-dramatic speech patterns coming into play, along with a few tosses of his shoulders and head, "Hmmm-mm-mmmm. How about.... You give me a kiss?" He suggested quirkily. Pulling you into his body so he had full control over you. Oh, he was good.
"You mean, like this?" You wrapped your arms around him, lips forced on his without giving him time to react. He smirked into the kiss, but didn't object as you began to lead it. He pouted as you pulled away too soon for his liking.
"Yes. Now that you know what I mean, we should do it again." The thick Irish accent sent chills through you every time. You shrugged and kissed him again, but this time when you went to separate, he put his hand on your cheek, keeping you in place. Eventually he let go, keeping you secured in his arms, but allowing you to speak freely.
"You're a cheeky little bastard, you know that?" He smiled proudly, leaning in as if he was going to kiss you. He moistened his lips with his tongue, and you had no clue how he managed to do that without it hitting your lips as well.
"Yeah, I know. But you know you love me!" Always one for dramatics, that's Jim all over. You hummed as if to consider this. Scanning your eyes over his pale features, yet blissfully dark eyes.
"Do I know that? Do I?" His smugness dropped for a moment, "Yes, yes I do." A look of relief spread over right before he was trapped in another kiss.
"Whose the cheeky bastard, again?" He whispered, breath gliding heavily over your lips.
"Oh, touché, touché." You laughed as he just held you tightly, your hands resting on his white cotton-tee. Wait just a minute? Tee-shirt? Cotton? Scanning his attire, he was wearing his sweatpants, nothing out of the ordinary, but you didn't even know he owned such a shirt.
"What's with the shirt?" You didn't mean to ask it aloud, but things do happen. He paused for a bit, looking like he got caught or something, before regaining his footing, a perfect lie coming out.
"I had to go out earlier, but I didn't want to waste the time to get ready, so I threw on one of Seb's tees. Why?" He pulled you in closer, a clear smirk pulled to his features, "Does it look good on me?" You looked at the tee, then back at him, then back at the tee, again. Now, it didn't look bad. James didn't look bad in anything, in your opinion. But there was something about it. About how non-James it was. From a glance, his suits were subtle, yet charming, and on further inspection you would see how grandeur they really were. A grey tee fit him, too. A bit dark, mysterious, plus it just looked plain sexy. But, white felt weird. You couldn't place the why, you just knew that it did.
"Everything looks good on you, but white just feels- off." You tried to explain, him giggling at your response before leaning into your ear.
"Huh, hm, okay, got it. White feels off, noted." He let his head fall so he was at your neck, his face nuzzled into sensitive skin as he took in your perfume. You squirmed at the touch, and could tell he was smiling at your ticklishness.
"James, I've got to go! *giggling* Come on!" You lightly patted his chest, "Let me go!" You could feel the hum of vibrations from his own laughter as the echoed over your skin. Eventually, he let you go, holding lightly onto your elbows to keep you from leaving quite yet.
"Fine, but you owe me later." He whispered directly onto your cheek before placing a small kiss on your lips.
"Deal." You assured before kissing him in the same manner. Fully releasing you this time, you headed for the door as he returned to the lounge. He didn't know how long you'd be gone, but he had to hurry if this was going to be done on time.

~Following you~

If James didn't love his gift, you would rip him limb for limb. You had the small picture of the original design he did, only then, it'd been in sharpie. You had a friend (loose term, meaning someone you'd helped get out of prison by hacking the system) who worked in the small parlor, who had undeniable talent. They only did freehand work, and could copy any photo. Which was lucky for you, since they'd do free work, preventing you from leaving a trail which James was undoubtedly already searching for, and it would be exactly what you wanted.
"Yo! It's the Black Queen! Been wondering when you were gonna get 'ere!" The petite woman welcomed, her usual black glitter lips curled into a smile. You laughed a bit, having no reservations as she pulled you into a hug.

~Back at home~

The mansion looked normal as you walked up to it. You were a bit surprised James hadn't even messaged you the several hours you were gone, and began to worry that... He might have forgotten. Your suspicions seemed to be confirmed when you opened the door to find no James excitedly greeting you with a kiss, nor any differences in atmosphere whatsoever. A bit disappointed, you ventured into the hallway, the soft whispers of a song luring you to look in the direction of the kitchen. Diverting from the original path of 'straight back to your room so you could cry while hacking a website to save some poor ducklings', you crept towards the white tiles, letting the beautiful sounds of the Phantom guide you. But nothing could've prepared you for what you found there...
"You didn't think I forgot, did you?"