I was taught how to make repeat patterns with a piece of paper by my wonderful teacher at the textile workshop during my time at Werkbundwerkstatt Nürnberg. I recreated this technique in Procreate. If you would like to learn how to make seamless repeating patterns on your iPad. This is for you.
Update: The class is now available for free on Skillshare.
P.S. You can still watch lesson 1 on Vimeo.