I wanted my pattern to take up 4 tiles so it wouldn’t be too busy visually. I measured the width of 2 tiles and had my stencil made to this size. I bought a custom sized stencil from an Etsy shop, link below.
The easy part about stenciling bathroom tile is you use the grout lines to keep the stencil straight. I used painters tape on each side to keep the stencil in place while I painted.