How To Attach an Iron On Patch
Step 1.  Place the patch on your garment or bag where you want it, face up.
Step 2.  Cover the patch with a light cloth or towel.
Step 3.  Iron the patch on high for about 30 seconds. - Note: items made of a synthetic material may melt during this process!  If you suspect your bag or garment may be meltable iron at a lower temperature for a longer duration. 
Step 4.  Turn the garment or bag inside out and iron again for 30 seconds.