Cutie Marks that I made in Illustrator. A few of these made previously but most of these are for the My Little Pony: Friendship is Live LARP my group ran at BroNYcon and Dexcon this year (2012).
My team and I came up with the concepts for the ponies and I made the majority all the cutie marks we had for the players and the GMs.
Most of the art is based on clip art I found on the interwebs and a number of the cutie marks are based on the pony name just like any good background pony.
Click to see on dA with all the names
Snapshot of all the vector art that made it into the current version of the Beta.