looks good
it's hard to tell from the pics...is there some yellows and oranges in the hilite areas? If not maybe try just a little. On the shadow side maybe put some sepia down there, once again not too heavy then come back over it with your darkest red and blend into the body.
Once again the photo doesn't do the work justice but contrast will give you shine and pop. AFter one of these is done try fixing it with some Krylon Crystal Clear. Your piece will leap off the paper.
You have skill. Nice work. I'll follow you from this point forward.