My ‘fold’ designs originated from doodles but over the years they have progressed a little. Originally they were just ink on white paper, then I moved on to ink and watercolour, and finally to Acrylic. More recently I have been creating repeat patterns with them and these are now available in different formats on Redbubble. See the link below.
https://www.redbubble.com/people/AlexPointer/shop?
Worm Illustration 