Wow that really cool. Your really good, I hope you want to contribute to the project long-term
I am also working on a detailed sketch of the scout, but I am not very fast at drawing.
Of improvements I think there should be some of the wavy lines I made around the ear-like things of my design. Also the nose is a bit pointy, I imagined that it looks a little bit like the whole there is skulls of cattle.
But again, you sketch is very nice, and I hope you will stay with us