I'm Linda. Here's a link showing how other Hometalk members stenciled floors. Rather than choose one project, I've included the entire link. To see each project, click on the picture. I hope one of these helps you.
Here's how a Hometalker did just that to a bathroom floor.
you might find this helpful.
Here's an option. Hope it helps :) https://www.youtube.com/watch?v=mmFvHwpgST4
I stenciled our entryway tile! Here’s my tutorial: https://www.aratariathome.com/blog/painted-tile-tutorial-entry-way-makeover-part-2