That one's... erm, well, I couldn't do it in mspaint. :S
You should really try out Photoshop. You could bring a whole new sense of terror to your Trogdor the Burninator sig. Buahahahaha! Run peasants, run!
5/10 (I don't know if these actually APPLY to mspaint, but the character doesn't mesh well with the background, and the background is kind of plain.)