So I have a pretty good custom skin that I really enjoy. However I would really like some extra detail added to the skin/clothing. For example I have an example of my skin, and an example of a fellow Youtuber, GoldSolace.

Solace:
http://gyazo.com/dad10779d4d397c540987175827fd007

And mine:
http://gyazo.com/17dfb8fba7c17a253b8dca6484a75250

As you can see the detail of my skin compared to the multiple colors put into his is obvious. I have the basic layout of the skin I want, now all I need is that extra detail. Anyone have any suggestions or tips on how to add noise to the skin that would result in a more natural looking minecraft skin? Or if anyone could, I would really appreciate someone whipping something up for me. Thanks!