The wavy grid is special. It is also known as Ogee-grid and appears in many patterns.I have practiced it many times, not only in zentangle. I have used it earlier in knitting, in bakery and in my paintings. When I think about it I should be really good at drawing this grid! But it is always some kind of a struggle to just draw the grid! Then making a pattern in it is something else! It always appear to be much easier to do that! The Groove-pattern (Eden Hunt) is based on a wavy grid.
I wanted to do one more monotangle of Groove using string 124. But that didn´t happen, because Discoleah (Tina Akua Hunziker)wanted to play too. And that pattern I can´t resist! You find the step-out here.