Application Instructions! Step 1: Set your iron at the hottest temperature setting. Don't use steam! Step 2: Place your patch in the desired position and place a pressing cloth if you're paranoid about burning it (such as a handkerchief, sheet or pillowcase fabric) over top. Step 3: Press the iron straight down for 35-45 seconds with as much constant pressure as possible. Try not to move it back and forth, you just wanna apply heat. Step 4: Turn the garment inside-out and repeat steps 2 & 3. Step 5: Allow the patch to cool down.