Very nice. You've got her expression spot on! There's only two things I can think of for this that might be worth baring in mind for the next time. It might be an idea to remove the lines between the colours in Rainbow's mane to give a better illusion of blending as the black is a little hard when put next to the colours. The other is ner nose. She seems to lack nostrels. Mind you, she still looks happy to have a go at me for saying so. Very cool piece of work!