How to use Step1: Before applying to a stick, make sure the surface is smooth and dry, clean the stairs run the water from the stairs. Step 2 : Peel off the adhesive backing, then slowly stick the stickers on the stairs. Step. Step 3: Use a plastic card, similar to a credit card, to remove air bubbles and water when gluing Step 4: Stick all stair stickers in the same way. Note: 1.The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2.Please allow slight deviation for the measurement data. 3.Please allow 1-2 error due to hand measure. 4.Due to the purchase of different batches, the product details will be slightly different. If you mind, please consider it before ordering.