Ah yes, I like to create graphics. The new one I've done for here isn't intended to reflect my character ...I'm not really peeling at the edges (I hope!)
The program I use to create them is Photo-Paint by Corel but there is a wide choice of other good paint programs to choose from.
I always think that it's best to try many initially and decide on just one, then don't use any other. That way you get to know how to use a program's capabilities really well.
I found that using one program for 'this' and another for 'that' meant I never got to know any program thoroughly enough to turn out graphics like my peeling TW one, or the one I used before.