Love...

Okay
Okay
Okay
first of all it's REALLY cute
i love the shadings the characters themselves and the eyes
OMG THOS EYESSS
lol

i also really like the BG how you did that it's really cool

i've seen it alllll HURR xDD

anyway there are a few things you should work on a little, though
The heads are a little big for their bodies so i think you could make 'em a little smaller
also, The places where you've putted the eyes are a little misplaced, i mean the one on the left has the eyes in a 'big' distance and has a small forehead and the other one has a big forehead and the eyes are a little closer to eachother.

that's actually everything i think that you could work on. It really looks nice an detailed though, your way of shading is REALLY something i look up too and also the way that you make BG seriously..... IT'S AMZAZINGG!!

keep up the good work c:

~Nikkie