Are you still looking? I'm trying to improve my design portfolio and my art one
At the moment I do have an issue of my development Xenforo mirroring my actual forum (and something has gone wrong with the development one to the point where it won't let me log into that one any more). I'm working on that issue at the moment, but I could use my actual forum to design it, then export it and provide screenshots during the design.
When making skins, I like to work from a colour base gained through the logo or images used to make the logo. So if you have a logo ready made, or have images you would like added into the skin, let me know as I'll lose them to determine colour.
I have made a few custom skins for Xenforo now. Not all of them are finished, but if you visit sizaelrpg.com (my Xenforo forum), you can see the new default called Deabition Ruins made by me, and Seno Nights 2.