Now stick the window decal paper into your printer and print your tattoo. I usually let the printed decal dried for a while. Make sure your guitar is clean. Then cut out the decal, peel off the back and carefully put it on your guitar. That's it!
You don't even need to do the hole 'contour of the guitar' thing. As you can see in my final photo, just print out some of your favorite pictures and decorate! Pan, God of Music, graces the top of my guitar.