Testing out mine base for ponies that i'll probably sell. This 7 ponies is having only one emotion, but it will be changed on later adopts.
Here is different price tiers:
10$ - you got it like this
15$ - additional headshot (made from scratch to show her personaity)
20$ - additional side view (made from scratch not just reversed base) and all above
30$ - nsfw bits, place for information, color of the blood, additional headshot, side view and your suggestion.

After buying you can do whatever you want.
Payment only on Paypal and only USD.