Great way to use up older fabrics and elastic. I cringe at the prices they want for covers too. I found some suspender type things to tighten up the cover from under neath similar to what you did with the elastic. Had them once upon a time but couldn't find them when I moved so started looking for them again. I think I found them online......probably at Nancy's Notion or Annie's Catalog. They come in a set of 3 in different lengths so you can position them in 3 locations where necessary. Sure keeps my cover where it belongs for me.