Try working more with the solid shading technique you've used to build up the sculptural feel of your work. The places you have used it have a more convincing feel of shape and mass. Overall you clearly have excellent sense of proportion and great confidence in your lines. Keep at it, and try to look for more positives in your work - avoid the perfectionist trap of always identifying flaws - that helps while you're working to identify things to correct, but to improve more you also need to make conscious efforts to identify what is going well and why those parts are working.
1
