Well never tried it, but there is also the Ferrari plugin. http://forums.sketchucation.com/viewtopic.php?p=286168#p286168 Here's the link to some tutorial. http://forums.sketchucation.com/viewtopic.php?p=361338#p361338 Anyway if you want something more "interactive" maybe you can combine Soap&skin (or Ferrari) and SketchyFFD. http://forums.sketchucation.com/viewtopic.php?p=222122#p222122