Ah, I do like your 'bad' Ash. Interns of what you can do to refine this cosplay, I guess it all depends on what direction you want to take. Do you want it to be really bad @$$. Chains, more leather, maybe rips in the jeans. I'm not sure what you're doing for footwear, but combat boots would add a subtle edge.
If I was a cosplay, a perfect cosplay, how would you know it was really me?
The Thing (1982)
(the missing word was 'imitation')