Ginny's hair is amazing, it looks so realistic. I love the way you've wrapped it around her neck, just that one strand, it looks great. The faces, despite at first looking cartoonish, are actually amazingly well done, and the detail and shading are so realistic. You've gotten the anatomy perfect, the lines and folds of the skin, and the length of the limbs. The clothes are so realistic as well. It's just all so well done.
Hm..... I just realized something. It's not like OMG! WEEEEEEEIRD kind of realize, but the "hm.... strange. Purposeful. Stupid to say it. Should I?" But many-a-times I have looked at a picture with James and Lily or Harry and Ginny, and thought they were the opposite pair. I mean, Harry looks exactly like James, (except for the eyes, yeah, yeah, yadda yadda), and both of them have red-haired girlfriends that also look a lot alike. Random thought spewing.