I revised my previously shown IX tile a bit. Eni Oken (CZT) pointed out that IX could be seen more 3D, a bit like pyramids. Before she told that I saw them only flat, like flower petals, but I think she's right. IX could be pyramids and I shadet the pattern like that.
I wanted to show you the result because I think its surprisingly how diffrent a tile can look with different shading.