Nice work @ebr0! Overall, I would encourage you to keep practicing with a goal to get your lines a bit cleaner. It will be easier to see your work less sketchy lines. In your first drawing, the upper part of the back looks awesome. You hit all the landmarks. In the bottom half, you've lost the tapered V shape of the Latissimus at the insertion point. Hope this helps :)

Week 4: Note: i liked my drawings and had fun with the challenge and bursting my creativity and knowledge thanks proko team :) - Ebrahim