|Ties after the ends were snipped|
The biggest problem I had was that layer of foam in the tie to make it thicker. I found I could keep the shape of the tie but still sew an elastic in if I snipped some of the foam off the ends.
|folding under the edges|
The I folded in the unfinished edges and sewed the elastic in with a zig zag stitch.
|A simple zig zag stitch|