*Lay your cloth on a flat, heat-resistant surface like an ironing board. To ensure the item will provide a good surface for the patch, iron it first.
If it’s a backpack or another item that’s difficult to iron, do your best to arrange it so that the part of the fabric that will be receiving the patch is flat against a hard surface.
*Place the patch in the position you chose. The adhesive side should be flat against the base fabric.
*Heat up an iron. Turn it to the hottest setting your fabric can tolerate. Make sure the “steam” option is turned off.