You seriously have the cutest style, gosh. Proportions and colors are great, and it has a very nice balance to the whole picture. Ah :3
Since you asked for critique, I'll try to be as helpful as possible!
Firstly, I think the shading looks nice! But I think there could be a lot more of it. I can tell that there are the beginnings of shading and shadows here, but try going a bit darker - you want a wider range between shadows and highlights to really make your drawing pop.
Secondly, while I do adore this pink/yellow mesh (which is nicely complimented with brown tones), I think that the pink and yellow might be a wee bit too saturated for the browns! Take that down a notch or two, and you're set.
Third, I would LOVE to see as much detail as you put into the hair and eyes especially into other parts of the drawing, like the wings and the pattern on the dress. For the dress, shading with a pattern can be hard - this is where layer play comes in! For the wings, seeing different textures and veins and things like that would really make them stand out.
Besides that, the drawing is wonderful. The pose is suggestive and shy/cute at the same time, the proportions are great - overall it's a very impressive drawing, very light and playful! Great job!! :3