I like the way you mapped the template and the detail on the current state.
the piece is a bit flat at the current stage, mix
more the shades of gray to give it form.
A tip for tooth, dont draw tooth like fibers, tooth most of the time
are reflecting speculars in a mix of highlight and shadow,
when tooth is really poor, they get texture.
I really doubt you will disappoint community,
you are a great artist.
Good luck.