Decided to try it. I have a big question: I feel like I take a long time to try to figure out how to shade the forms. I get really really nervous and I don't know why. I haven't really done this before. Is it something that gets better with time? Edit: I added an updated piece cause I felt I overdid the gray using a conte stick.

Wanted to give it a try. I used a lead holder mechanical pencil with 2B (personal preference). I needed extra reference, so mocked up this shape in Blender to see if I was getting the lighting behavior right. Don't know if that's cheating, but I'd prefer that to just imagining it and hoping for the best. Also, I have trouble with figuring out how dark is "too dark". Is it dark in reference to everything else in the picture? I know not to make the terminator pitch black, as that'll make it flat as Wisconsin. But is this too dark or too light?

Another forearm drawing. CC is appreciated.

I decided to give this a try. I had trouble with figuring out the muscles from the other muscles of the arm when they're not visible. Am I supposed to imagine them, or am I supposed to use a model to find the muscles I don't see? I have a little ecroche model that I try to use. Am I supposed to do that? Any feedback or help is welcome.