If you have time to really look at it, except for the pentagram in the spider's abdomen, the whole spider is a knotwork, one continuous line. That's the reason it took 10pages and a bit more than 5hours to draw. I had to learn how to draw a nanogram (9points star), a decagram (10points star) and make sure that there are no errors in the knotwork. My eyes got tired easily drawing the line going over, under, over, under all the time.