Instructions Garment should be clean & freshly laundered for attaching patch. Here are the basic instructions for setting our iron on patches. Step 1: Set iron to "COTTON", 400 degrees, for one minute. Step 2: Thoroughly iron area of garment where patch will be placed. Step 3: Spray water light on the back. Position your patch where you desire, Place it on garment, embroidery facing up. Step 4: Place cloth or light towel over patch and using a slow circular motion, press firmly for 30 seconds. Step 5: Let cool for one minute. If edge of patch can be lifted, repeat step 5. Note: You can either sew on or iron on all patches that we sell.