Okay, So its clear that you used a pony creator to make this - and you should have credited the creator of that game. Pony creators are okay for making a basic OCs or concept designs, but I would have liked to have seen you draw this yourself. You could have taken the time to add a Cutiemark or at least re-position the character because the current position is rather lifeless.
However, you chose nice bright colours and kept it simple to create a memorable character. Your colours do work well and its clear you though before choosing them. You have included his basic information which gives him depth.
Again, the only downside to this is the fact that you used someone elses creator and effectively someone else's art to do this. A backstory could add more life and depth.
Overall its a good character, Keep it up! (: