Amos Drisriak

I draw scary faces too. Grrrr...aarg! I was working on some character designs for an old story of mine. I think he looks devilishly handsome. Amos is a Kushadian; a race of reptilian beings who dwell among the shifting white sands of the Trioq (tree-auk) desert. His dreads are sorta how his hair grows.  Like that one breed of dog that has a corded coat.

Any suggestions on pencil technique/ adding texture [specifically reptilian skin] would be appreciated.  My pencil skills are one of my strongest talents, but they've gone rusty.

*Update: Now rescanned... You can see more of my pencil work.