Not one of my all time faves but it was interesting. I found it very challenging (not enough room for the wonkiness of my style, I'm not a straight-line gal!). Many renditions later... I finally came up with something I didn't totally hate.
I started this tile with a zig-zag string, created a triangle crescent moonish tangle with lot's of auras on one end. Next, an unsuccessful attempt at Sankegg with triangle (morphed into little dangling spears). Since there are no mistakes in the Zentangle process, I went with it and embellished. When in doubt, embellish and shade the heck out of it! FINALLY, a tangle that actually resembled Sankegg, added Paradox in the negative spaces, some curvelinear Hollibaugh and Tipple to offset the spikey tangles, topped off with a little Zedbra to balance and add contrast. Voila!