I’m making kids costumes and the girls skirts are made of a suede material. I don’t think the fabric will gather well for an elastic waitstband, but I want the skirts somewhat adjustable in case they don’t fit each girl exactly. I’d like the ideas I collect to be quick and easy ways to do an adjustable waistband. I’m fairly handy with sewing and I can follow most directions (just provide lots of details!) Thanks.