Work in progress K-on members

This is what I've been working towards for the best part of today. I have not edited it it anyway- it's all traditional work. That circle on the right hand side is Mugi... well the beginning stages of her anyway Ritsu looks lopsided here but that's just the way I took the photo- trust me

I would really help me if you could comment on what you think I should change/keep to make this even better