This Zendala was made with a free (well, almost free) template tool. A while back I told you about a Zendala maker that you can purchase on Amazon (link in the side panel). But this Zendala can be made with something you would normally throw away.
The perforations are almost a rice shape but I'll call them dots here.
Here is what I did for this tile. I stenciled all the holes from the inner circle and skipped the middle circle. On the outer circle I stenciled one dot, then skipped two dots, and so on. I did this first in pencil but later as I worked on the Zendala I ended up doing them in ink. The nice thing about doing them in pencil though, is that it leaves you options as you work.
I then connected the dots. 1) I connected the dots to each other. 2) I added a curved line to connect the tops of the dots. 3) I drew a curved line that angled from a dot on the inner circle to a dot on the outer circle.
Every time you do this you can choose different perforations and/or you can connect them in different ways. So you can make a variety of Zendalas with this tool.
From here on out I tangled away as I normally do. The tile above uses Striping, Purk, Meer, Flux, N'Zeppel and Paradox. An aura around the hole thing and pencil shading completed it.