My artwork for Cottonee and Whimsicott. (They're not drawn to scale in this image, I just resized the images to reasonable sizes.) Decided to put them both in one image just for the sake of convenience. :T
Cottonee's design is a bit borning and there's not too much to do with it, so I just drew it from behind. Whimsicott's really fun to draw, but getting everything to look right was difficult - I wanted the artwork to have a nice flow to it, and getting the body shaped correctly was tough because of how easy it is to go overboard with the angle of it. It's so easy to draw it became difficult! xD Anyway, I'm pleased with how both of these came out.
Edit (2013) - Updated the permissions watermark to reflect the most accurate wording. When using this art, there's no need to ask permission - all I ask is that credit is given if possible. Thanks.