Give your treasured clothing or accessories a makeover with an embroidered iron-on shuh. patch! 6cm width x 3.8cm height How to apply a patch: 1. Place the patch facing up on the clothing. To ensure the patch is applied evenly, make sure the clothing is flattened or ironed. The iron-on patch works best on cotton. 2. Before ironing, place a piece of cloth or baking paper over the patch to protect it. Iron for 30 seconds. Then, turn the clothing inside out and iron the patch area from the reverse side for another 30 seconds. Allow the patch to cool completely. Images remain copyright of shuh.