Worn and Thinned Apron

[The Wizard of BC]

One old school way of repairing this is to find a small piece of the same fabric from somewhere like inside an apron facing.

You sew a patch on the inside - lining up the Tartan pattern - and with a felting needle join the patch to the apron.

If you are careful this will result in an almost invisible repair.

Barbed felting needles are perhaps the most secret tool of repair shops.