Thanks much cfb2000 and rich for Linux version! First try. I prepared the original image (mannequin from fontplay) with following settings. Using long lines and strokes look good with desaturated and sepia images in my opinion. 1. Colors/Desaturate/Color to gray (Radius 74, Samples 4, Iterations 10) 2. Brightness-Contrast (Brightness -95, Contrast 90)