HMC: I quite like that
xhunterko: I don't find it too bad.
Opacus: I find the abrupt change in the size of the thickness if the brush quite strange (especially on the doves' wings), but I also think you should make a bit more use of the different brushes (eg the ones you used for the black shapes around the skull) at your disposition (maybe for shading the doves and skull?). I don't know if it'll work, but I'd give it a try
Ryumaru: I find his head lacks a little volume (and where's his mouth ;_;) and the flame a little too dramatic. I'm not too sure about the red rock on the right, it reminds me of cloth (with folds).
Other than that, technique and colour are very pleasant! My favourite bit is definitely the arm on the right.
A SW doodle.