Fairy Tail: my boo

My friend requested me to draw a couple for her project design. I decided to draw Natsu and Lucy from Fairy Tail since I can't think of any other anime pairings.

If all of you would notice, the drawing has some dirty pencil erasures (because of that f*cking old eraser I used) and the inking is not that good (because I'm not good in inking, that's all).

I was originally planning to edit it in PS after scanning it. But I forgot that I don't know how to vector and I don't know how to add anime-ish flowers and a naturalistic scenery.

Its inspired from "My boo" by usher and Alicia Keys (I so missed that songs in years!)

If anyone would like to vector this, please credit and let me know so that I can see your works. i would appreciate it!