Steve,
I think my only suggestion would be to use an embroidery hoop when doing your sashiko. I tried it both with and without and when I worked without the hoop I tended to pull my stitches up to tight and had gathers. It's a pleasant way to spend an evening while watching re-runs on the tele. I spent a few $$ at Shibori Dragon yesterday and have a new project on it's way. Another strangely adictive craft! Just what I needed!!! :lol: