Layla certainly looks slimmer, although something (I'm not sure what) seems off about her neck.

I like Crys's arms, but his hair seems a little strange. It might be that you're using a very light outline on it, while everything else on the sprite has a black outline. To account for Sev's issue with the pouch, perhaps it could be moved to his right (our left) side? That might also leave some plain space to throw a pick in his left hand, if you want to pursue that.