This is really interesting and I love the minimal light. I'm almost looks realistic
I think the shading could have been more dramatic, and you don't have any mid tones or highlights (or at least it doesn't look like you do), but it's still a nice piece. hope that helps :) I'm far from an expert though
By more dramatic do you mean more defined? Sharper edges between each shade or just a wider range in shades?
I really like the shading on this, good job :)
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