There's a cool layer mode in the GIMP called "Dissolve" which makes all the pixels either opaque or 100% transparent, but decreases the density of opaque pixels, the more transparent the source pixels are. Turns a smooth blurry edge into that kind of crayon effect.
There's a cool layer mode in the GIMP called "Dissolve" which makes all the pixels either opaque or 100% transparent, but decreases the density of opaque pixels, the more transparent the source pixels are. Turns a smooth blurry edge into that kind of crayon effect.