Well that took at lot less time than expected. I started this on Wednesday and just finished. This is from The Crystal Empire, Part 1. I love Ponyscape, making all those lines on the field would have sucked so much without power strokes. Go check it out if you do vectors.
I have more plans for this, but the background was the hard part so I did it first. Expect more in the next few days.
Night time version: here
Download the svg file here
I don't own MLP:FiM.