I also did a sketch version of this because my sketch commissions are starting to take a long time (almost as long as the cel shading) to the point I don't feel there's any reason to have those as two different options. So I was playing with reworking the sketch style a bit so it doesn't take so long. Pretty happy with it, it still looks good, and now it's more obvious what sketch looks like compared to the cel shading. :)