Draw triangles and colour them in. I started with a star shape then worked my way out. Who needs adult colouring books when you can make your own pattern. I also tried to vary the colours so that there is more light and shade in it. The paler blue section seems to recede. I just used a set of ordinary felt pens and a fine line pen to draw the triangles. Doing something like this is like a meditation. You can sit and let the world go by as you draw and sketch. You can use any shapes you want and make the pattern as complex as you like. X