Simple checkerboard patterns are not difficult to do. For a 2" square red/white checkerboard pattern:
Step 1 - Paint whole panel white....make sure paint is totally cured before proceeding.
Step 2 - Cover completely with strips of 2" masking tape butted against each other....do not overlap.
Step 3 - Use razor blade to make cuts 2" apart, perpendicular to the strips....avoid cuttiing deeply into white paint.
Step 4 - Remove every other square of masking tape.....use care to avoid pulling up any white paint.
Step 5 - Paint openings with red color....the thicker it's applied, the bigger the ridges will be.
Step 6 - Remove the remaining masking tape squares to reveal completed checkerboard pattern.
Step 7 - Optional: Clear entire panel....sand and reapply clear to make smoother....repeat if desired.
Keep in mind, 3M Blue masking tape is a home interior finishing tape and not designed to be used with 2-part automotive type paint systems, so be careful. (The solvents can sometimes cause the adhesive to seperate from the tape.)
Hope this helps,