I followed an Albert van der Zwart tutorial today as it is a very grey day. I choose colours to cheer me up on such a dull day. https://youtu.be/peDrpgjho2Q I prefer the free flow of Paul Klee’s work but the tutorial was a starting point.
Great work! I almost find this style like magic eye pictures where have to focus your eyes to see into the pattern. I've watched the tutorial and might have a go too.