When I was at CanTangle 2015 I started one of these and today I did another one. I'm not thrilled with it but I do love what Margaret creates. I'll try again... but with more of my style in it... and I'll see how it turns out.
Not Zentangle® but Zentangle® Inspired Art!
And then I added an aura around the tree and a bit of colour:
Aleesha Sattva CZT