First things first, measuring! You’ll want to measure and layout your tic tac toe board design before you start painting. We used a 4″ x 4″  piece of tile and marked the tic tac toe lines 1″ from the edge  vertically and 1.5″ from the edge horizontally. Keep in mind the  thickness of the lines, our lines are 1/4″ thick.
Once you’ve settled on a layout for your board use a pencil to mark  where the lines will go. Next, cover the tile with painter’s tape to  leave one set of lines exposed for spray paint. We had copper spray  paint on hand but if you’re using a paint marker you can simply draw the lines on the tile using a ruler and skip the painters tape step.
Before you begin painting make sure your tile surface is nice and  clean! If you are going the spray paint route make sure to tape off the  edges of your tile so you don’t get paint where you don’t want it. Start painting!
Let the spray paint dry for a few hours before peeling off the  painters tape. Once you’ve peeled off the tape repeat the steps above to do your second set of lines.