Tiling we rapidly found out is an art form. There is a lot more to holding the pattern consistently than big tile, little tile. Grout colours come in as many colours as paint and it was easy for Sarah to visualize tie-dye mosaics. As for the knees and the back, well this is just another craft for the young guys.
The dormant math brain had to do a little overtime.
Master bathroom. Porcelain on the floor.
Tim's bathroom floor. Travertine on the floor in the Versailles pattern. We were seeing double long before we finished this room.