MS Paint takes months to get good and decent at, much like every other program. I'm a mouse and MS Paint geek xD I can't live without MS Paint... The old school feel of it is awsome :3 Yes, GIMP is a free version of Photoshop, but more aquinted to drawing than PS is. Okay, before you yell at me... I know they both are editting and drawing programs, but GIMP is more keen to the artist rather than the editor.
Very nice, but it's too straight. You definantly need to work on jaw lines! As Tarff said. And I thought it was Yuki from Furuba too! Haha xD Um, let's see. The eyes, when you go in for skin, after filling that, take your curve tool, the squiggly line, and make a little half circle connecting the lashes useing white or a yellower, or bluer white. But it has to look almost white x: Then you have ... eye whites
biggrin Give the eyes more expression, that's possible! And the lips, they could be a bit thicker.
Remember to always sketch on Paint. x: It helps a whole lot ^^ To get rid of the sketch, put white as your background color, aka secondary color, and the color of the sketch as your primary color, or your first color! Take the eraser, make it whatever size you want by useing crtl+the minus or addition sign on the number pad. Right click with your mouse, the one you don't use to draw, and run over your picture! Then, TADA! Gone :3 I've been useing paint for a year nonstop, maybe two now.
My dA here. I have pictures I have drawn and colored in MS Paint useing a mouse on my dA. ^^ You can use mine, I doubt you would, as a reference.