I’ve made a short video with a preview of all the designs in my Geometric Patterns Colouring Book. Geometric Patterns has 50 original pattern designs, most of which are moderately challenging. It’s available in paperback from Amazon (UK link), and as a PDF from Etsy.
This is the first upload to my new YouTube channel, which you can see here. Over time I’ll be making videos for all my books, as well as some other video content based around my art.