Lovely design so far, and great attitude in her expression!
Of these layouts, 1 would work if you zoomed in more. It's a character challenge so we want to see the character well (how else are we going to see that great face?) #2 also works for this reason. 3 is symmetrical and thus rather static, not as exciting as the others.
Great design and color work so far. Good luck whichever you pick!