To be quite honest I'm not positive on Hasbro's standing with all of the MLP products people are making out there. I know that it's not ok to sell any of the official artwork as your own ie printing official work to make buttons, stickers, etc.
I see. So the idea is that, as long as you drew it yourself, it's okay to sell? Even though they're not your characters? Again, I only ask because some people have been asking me for MLP prints from DA, and so far I haven't been comfortable oking them.