Moira in N.E. England

I also make throw pillows with envelope-style backs. I check the pillow forms and, if necessary, I wriggle the stuffing into the corners.

I had also used pillow forms larger than the cover and have found that the back needs to have plenty of overlap or it will gape. If I am making a 16 inch cover the 2 back pieces will be at least 12 inches long. I’m making 18 inch covers at the moment - the back pieces a generous 13 inches long. It might be a struggle to get the pillow form in but the opening will be reasonably flat and neat.

I’m also going to try Tartan’s idea - it’s a good one!