Remove the hardware and strings from the guitar and set aside.
Tape a piece of paper inside the sound hole using the painter's tape.
Spray the entire guitar with a coat of primer and let dry. Use the sandpaper if necessary and wipe away the dust.
Paint the guitar using a paintbrush and let dry. Don't paint the front of the guitar.
Lay your fabrics out on the wax paper and paint with a coat of Mod Podge (this will prevent fraying). Let dry.
Cut the fabrics into squares using a craft knife and ruler.
Mod Podge the fabrics to the front of the guitar using your brush. You can leave the fabrics to hang over the edges at this point. Let dry 15-20 minutes.
Apply a top coat of Mod Podge to the fabrics. Let dry. Trim off the excess using a craft knife.
Replace the hardware and the strings to complete your project.