@contagent First, your picture is great! Really good stuff.
As a note, you should always watermark your work. While I'd like to believe everyone is inherently awesome and honest, it just proves not to be so sometimes.
Also, you should try some art that is closer to what game designers are looking for. Try making a sprite sheet for a character, or item icons, or something like that. If you need examples, hit up google images with any of those terms, or check this forum. Good luck!