That's a really awesome pic Teruri! Did you use a line tool to draw it or just a regular paintbrush?
I used the so called 'path tool' in the Gimp. But it's just like the line tool in PS. If I used the paintbrush the lines would be messy, I can't draw on a laptop without a mouse xD.
However, I'm not sure about the sprite. The head seems to small and the body seems to big. :/ Might edit it to make the head a bit bigger.