So I did another and filled in lots of space. Then I kept looking at this thinking it didin't look quite right and went back to the web site that Teri told us about and read up a little on them.
I realized that they didn't go edge to edge on their paper. It was more of a free hand drawing.
Although they suggest that you use black ink and fine papers I have used what I have on hand. My sketchbook was here just waiting for some attention and since I like color I have done a few small ones with my colored Sharpies. The one below sort of looks like Broom Hilda came out of her dress as she flew by.
I also reverted back to the full square with the blue. I don't know why that happened.
All I know is that once I started I had a difficult time stopping. It may not be the true zentangle but it is something I enjoyed doing...obviously.