first, the tarzan preparing the spear is really cool. The anatomy is well desinged, and it has good story teling. Second, i can relate to your problem. I feel i confident i can draw the image in my head, but as im finishing it im startig to dislike the final product. What has helped me wth that is to have images of some of my favourite artist (Alex Ross, Frank Frazetta, Criss Samie etc.) as inspration. Sometimes it helps with composition, lighting, anatomy, color etc. hope my comment helps you. you have helped me relly well before, so thank you for that. btw. sorry for my bad writing, im still learning my english.
Hey, here's my assignments, the first one I followed Proko's steps, for the remaining exercises I tried doing it by myself with the help of a 3D ecorche. After finishing those I checked the rest of the videos to see what I did wrong, lots of mistakes here in there, especially on the forearms but well. Once I finish the course Ill get back here and try it again, these were fun!