Thanks to the fact that I own this pony, I was able to get a super-high resolution photo of her cutie mark. I did copy exactly what was on the pony, but the breaks in the stem and the leaf look a bit strange.
You may use this!
And you don’t have to credit me, because I’m sure Hasbro still holds the copyright to the image, and this was vectored directly from a photo of the pony.
Check my MLP Stock Folder for more cutie marks.