It's a little tedious, but I prefer to do one color per layer. After drawing a color, select everything in the layer and then do a union and remove all the inte

It's a little tedious, but I prefer to do one color per layer. After drawing a color, select everything in the layer and then do a union and remove all the interior points. That makes the file much smaller. Otherwise, you have overlapping "brush strokes" that have hundreds of points each.