I loved the ears. Just because this is a pony site doesn't mean it has to be a pony! Nice try though. Im assuming you used Microsoft paint to do this. That's fine and all but if you want to get something better, there is a lot of free Vector programs out there. Vectors are nice to draw ponies with because a Vector art consists of lines and curves (like a pony does). How ever you don't want a vector program if you want to do art like this:
For something like that you would want to use a program called photoshop but that costs a heck of a lot of money and unless you cheat the system (which I am not recommending) your probably going to want an alternative like Gimp. However I hate everything about Gimp. Its basically a knock off of photoshop and although its free, its user interface makes me want to smash a board on my head. Also if you want to throw like $50 in to the equation, you'll want to get a tablet. A tablet as in a bamboo tablet and not an I-Pad. Google it if your confused.
Hope this helped and don't give up hope. Watch youtube videos (or Lynda if you got the money) to help you with it.
-Sparkle Speed