Yep, you can paint them right in. Of course you should increase the spacing so that they become separated and not one big blob. Gimp uses the image and basically places numerous clones, or stamps, down (even in color) while Photoshop uses a grayscale to define the line-shape of the brush.
I only got Gimp yesterday and I'm rather pleased with it but because of that I have no idea how I set it up to do that, would you or anohter be so kind enough as to explain quickly? Cheers
Greeks don't fight like heroes, Heroes fight like Greeks!