Ok, so I haven't made a cushion fit for a gallery, but I have made one with some Art Gallery Fabrics. (Carnaby Street by Art Gallery Fabrics)
I have just finished it this morning, complete with binding, which I have never done before...
I did curve the corners but next time I would curve them even more.
....and a zip centre back.
I googled how to insert piping on a cushion and also how to insert zips.
So now it's soooooo easy when you know how. The house will be coming down with piped and zipped cushions.
But alas it's not a happy ending...........
I need to introduce this ^
to this ^