Not with anything radical though. Try vectors, something you've never done before, stop using things you usually do and just jump into something using something you've never used. Imo all you're backgrounds are rather samey hate to say it. Im not too keen on this one... using models in sigs is hard unless the model is perfect and specially rendered in a pose, otherwise it just looks... wrong. Its a bit too bright near the typography, also the typograpy could use some work.