I sketched a thin but medium sized monotile to be frugal when printing a large amount. I noticed a lot of the designs already made seemed to be pretty thick. The printers I have at school have a terrible time with elephant's foot, so I added chamfers all the around so the tiles can be tiled nicely whether they are facing up or down. Mirror the file in your slicer if you want to have the reverse facing tile with the same texture on top, otherwise it doesn't matter.