Evolution of Derpy

Through thousands of years of natural selection, the optimal muffin recipe has been achieved, which has led to the current variation of the modern day Derpy that we are able to observe in its natural habitat in Ponyville
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Hiya! This is my first piece of released art, hope y'all like it! ^^ Yes, the prehistoric horses are based up the actual prehistoric horses!
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Edit- Disclaimer, 'coz im paranoid!
MLP:FIM and all characters affiliated belong to Hasbro and Lauren Faust

Edit no.2! I just realised i forgot to put the mark on the ear /facehoof >.< . Plus ive reuploaded a slightly smaller image size as the origional is way too big!