I did my first machine quilted project this week using the spray baste (hate to pin and baste)...it was ok - but I did have a few wrinkles that got caught in the sewing near the borders and outside corners. I think the edges just got handled more and didn't stay as secure. The middle was good tho.... Another reason maybe is that I was a little hesitant to over-spray the baster and just kind of closed my eyes and did a pass-by over the batting, LOL. I think next time I will spray better, but i will use a few pins on the edge - at least until I am more experienced...