thanks! but is there a tool here I can use to make straight lines quickly? I've seen quite a few people do it :S

I do straight lines by zooming in and drawing along the bottom of the DS screen. It makes it straight when I'm doing something for the background. You could try that along with what they ^ said. Good luck! ^-^

Ooh or the sides of the screen, or the top- Depending on where you're drawing it. There isn't a tool it really is just "Practice makes perfect"

Alright! Thanks everyone! :]