Dina

I did. I enlarged two twin sized quilts for the very reason you are wanting to. My method might not be what you want, as I am not a quilting perfectionist.

I added six inches all the way around. I didn't try to make the addition quilted. It is just one layer. I hemmed it first and then sewed it to the binding....actually I lined it up to the middle of the binding, so just a tiny bit of the binding shows on the top side of the quilt...sort of like piping. I did not have any of the same fabric, so I went with a solid brown that mainly matched a brown in the quilt.

I think I can find pictures...I know I have an after picture. Not sure I have a before picture....okay, found both.

I am happy with my results and have both quilts on beds right now.

Maybe my method will work for you?

Dina