for the band shading I have better results doing it in 2 sessions. lol its most likely due to my in experience, but I get way smoother gradients doing it in 2 sessions. I did the first time a bit lighter and darked it more the 2nd time.Looks like alot of work really. The shading really makes me jelous.
Only thing i see is maybe a lack of contrast with the head, but that might be just the photo. Really good composition, nice flow, nice everything
Reallt nice sleve, i can you're glad it's done, how many hours did you put into this?