Step 1: Set your hand iron at the hottest temperature setting. Do not use ANY steam!
Step 2: Place your patch in the desired position and place a pressing cloth (such as a handkerchief, sheet, teatowel or pillowcase fabric) over top.
Step 3: Press the iron straight down for 35-45 seconds with as much constant pressure as possible. No back and forth movements.
Step 4: Turn the garment inside-out and repeat steps 2 & 3.
Step 5: Allow the patch to cool down.