Well, I'll just tell you straight up. No steps.

If they're having a bad day, walk over, and hug them. Give them a nice squeeze, and then let go. And after that, say something sweet to cheer them up.

If you generally just wanna brighten someone's day, take some flowers, and hand it to them. Then, give them a sweet poem to go with it, having to do with the flowers you gave them, give them a hug, pat their head, and then quickly walk away.

You'll thank me later.