I tried for some patterns that suggested flowing hair and seaweed and some waves and foamy bubbles. I think it worked pretty well. I liked how the tangles just seemed to fit and grow into each other.
In the end, it was a fun experience. Next time I'd try it on a better surface with a pre-planned pen in mind to maximize the results. But here it is, warts and all, and I hope it gives you some ideas of your own. Actual size is about 24 inches in length.
If you are interested in learning the Zentangle® method of tangling, shoot me an email, and let's chat about it. Remember, "Anything is possible one stroke at a time."