Guest, The MLPTP's Fundraiser and Prize Giveaway will be returning on June 1st! Check out this thread for all the latest news!
Just seeing this now, but it seems like question was answered by @skig (btw fabulous photos of the ponies!)
The project was created by myself and @wingsofmasquerade (Em -not sure if shes on the MLPTP currently?). There are also ollectors who do help with design, and other works such as @wysteria. I can't remember the other collectors user names on here or the arena, but there's 9 of us in total at the moment helping getting these ponies to collectors.
As for designs, majority of the ones created I have envisioned myself and pass the idea along.. But they are all group effort and decided as a whole what will go and what doesn't.
For more information, the facebook group has a pinned post in the announcements about the project. I also have made a video talking about it, that I will bump up in the feeds for members to see.