Tim's old head. Note the nasty thick-framed "nerd" glasses.
Peter's old outfit. I made this from one that was supplied with Unleashed, by recolouring the sleeves and adding the dragon.
Here's Tim's new head and the back of Peter's new outfit. You can't really see it, but the new head looks much more like Tim. Both sims are wearing clothes similar to ones owned by the rl Tim & Peter.
And the front of Peter's new outfit.
I should, of course, point out that I didn't make any of these skins myself - I just edited existing ones. But I'm still quite impressed with my achievement.