Well done. I can never get Rouge quite right. It's one of those cases where you drawing what you see, but you can't figure out where you're going wrong. Good pic, though. (Methinks there's a wee bit too much fanservice for her)
Sally's probably got one of the more complex designs. I don't draw her much, but I succeeded once. As for Rouge, I think it's her whole form that gets me. No other characters I draw are quite as..... developed as her. You know what I mean?
8D In every fandom there's always one character I never get tired of drawing. For Sonic, Rouge was that character. 8D I'm sure I have a notebook somewhere full of nothing but Rouge and her gorgous alternate outfits. XD