Thanks for the feedback! Maybe I'll go over my my sketches to get a better read next time. I totally agree with the occlusion shadows. I feel like I need to work on contrast in general because my highlights are lacking too.
Here's the painted version of my study and the reference image. I seems like I missed a lot in my last torso paintings. I'll be doing this again on the skeletons like before.
After the painting I did a test to see how much I remembered. It turned out a little messy, but I think it helped with showing what I need to improve on and helped solidify where everything goes.
Also, make sure you back up your files and usb drives
I lost 10 years worth of files being neglectful. I heard from someone that if your files aren't in at least 3 different places then they don't exist. I thought it was good advice but I didn't take it as seriously as I should've. Very grateful I can re-download the lessons from here.