I'm not sure if you've gotten any reponses via pm yet, but I would be interested.
I am very new to customs (having only worked on two so far), so I would understand if you'd prefer a swap with someone with more experience. I also have not done a swap before, but I am very eager to do some!
Both of the customs I've worked on have images posted on the arena here, and I have done some sculpting if you were thinking about that. While I have only done g4 ponies so far, I do have a number of g3 baits as well.
Thanks for your consideration wiccanpony!