Keep your tangling space manageable. If you don't have an official Zentangle tile, you can cut a piece of paper into 3.5" x 3.5."Pick two or three tangles, at the maxium.
After you draw each tangle, be conscious of when you've reached your point of "enoughness."
White space is your friend. Or, even, it's more than a friend.
I made a very simple looped string and used the tangles, Purk, Paradox, and Fescu. I really enjoyed this challenge! Thanks, Katie!