Title
I feel as if your title is misleading. It gives the impression that your compilation would include prompts for readers to take and write themselves, when in reality it's you taking a prompt and writing it. Consider changing it to something. My compilation is called "Modicum," though it's not based on prompts like yours is. The writing in it is all my ideas. ;)

Cover
Your cover is cute, even though it doesn't have anything to do with anything. Haha. I'm not quite sure why you chose that particular image. You'll notice that my covers always say something about what I'm writing. Your cover is kind of your first impression—make it a great one.

Blurb
Your blurb is simplistic, and I think that that's a bit of a fault. Your blurb is also like a first impression. Once the cover hooks the interest of a reader, there's the test of a blurb. The blurb does a lot to determine if the reader will open the story and read. With your blurb, you give me doubts because your blurb doubts yourself. Of course you'd like to think that you improve every time. However, it takes away from your professionalism and makes your blurb sound more like an author's note. It also doesn't tell us readers what your story is going to be like at all. It's very vague.

*since your story only comes in one part, I'll be reviewing it all in one portion*

Daydreams and Sky Trains
That's how your title should technically be capitalized, but I understand the aesthetic effect you want for it. Speaking about that effect, your sentences should be capitalized at the beginning, no matter how aesthetic you think it is. I could understand poetry being all lowercase, but these are supposed to be short stories. The lowercase might put off readers because it takes away from your professionalism. "I" should always be capitalized, too. No exceptions with that one.

You have some issues with run-one sentences, especially with too many clauses that start with "and." You tend to use that word too much. You always add too many clauses to your sentences, making them run-on. It's okay to have sentences with one clause! Perhaps you should do some research on it. The raindrops falling sentence doesn't make sense, either, and it may be grammar or it may be that you're being too vague.

For the grammar problems, I'm going to take a point off. -1 is your total so far.

Being vague can be a great thing—but you still need to give the readers enough information to go on. I have no idea who that girl with the green hair was. The main character said something about a characteristic of the girl being "exactly like the stories," so is she some sort of mythical creature? It's too unclear.

You must have an endmark at the end of every sentence and you must capitalize the first letter of the first word at the beginning of every sentence. It's a law.

I like your ending! It was very nice. I like the emotional buildup and the beautiful language that you use throughout the entire speech. +1 point for that style, breaking even.

Overall, taffish got zero points! Besides being a really short piece of work, it lacked information and had a lot of grammatical errors. You write with incredible style, though. Fix those issues and your piece could be fantastic!