What you need to have: Adobe Photoshop PS: ⌘ key for Mac users / CTRL key for Windows users Prepare the texture pattern (Download the ready made texture 1 and texture 2 if you are too lazy to create your own.) 1. In Photoshop, create a new document by pressing ⌘N / CTRL-N. Set the size at 20×20 pixel. 2. Zoom in (z) few step so that you can work on it easily. Choose Rectangular Marquee from the to