Awesome work and great concept!!! I just started a Facebook page called The Art of Star Wars [link] . I started it to not only post well known Star Wars Art but also Star Wars Art from deviantArt and other sites in hopes of help giving more exposure to the Artists. I was wondering if I could post this one with a link. You do some great work!! Let me know. Thank you.
The helmets look well done, some of the damage on Boba's is off but that sort of thing gets really tedious. The main thing is that the neck, mostly Boba's, doesn't look like it's a neck attached to a head in the helmet and it's a bit broad overall. This might be solved by changing the folds in the fabric so they arc the same way as his helmet and adding something in the shadow of the helmet's chin, where the bottom of his mandible should be.