I love the draping of the sheet, the folds look really natural and realistic! And you captured perfectly the pose of his arm and hand, it's easy to loose the balance of anatomy when there's lots of fabric involved, at least for me I love it!
I really admire how you captured the folds in the fabric. I'm currently taking a beginning drawing class and we are working with value, which I am not very good at, do you have any pointers that might be helpful? Great drawing!
Thank you! Oh god, I'm terrible at giving advice. D: I think using tinted paper helps a lot. It's much harder to make things pop when you're working with white paper, but everything from off-white to darker greys and browns makes creating different values much easier, imho.