Wow everyone, thanks for all the responses 
razz: Yeah it’s fun, sometimes I feel like I’m Superman with X-ray vision hahaha! I don’t think I should tell my friends I can see their bones, muscles, or through their clothes. 
I’ve been looking through this book for some of my bone studies. I’ll look at some from Anatomy for the Artist because it has some photos.
One detailed, and 3 quick ones.

Need to figure out how that clavicle works with the scapula. I know it connects with the acromion process, that thing sticking farthest out from the scapula. Well this isn’t called a study for nothing 