If you want something done right, do it yourself. Or have a different version of yourself do it for you.
Once again I find the horn looking a bit unusual on humans, but it's acceptable. I like the way both of them turned out here. The hair is a good human version of Rarity's standard style, and the clothes look just right for her colours as well. I like what you did with making the cutie mark appear on the human form, good idea to stick it on the shirt. Also, nice necklace there.