I don’t have a tutorial for you, but I made an electric guitar cake cut out of 2 9″×13″ cakes. I covered in fondant, added the fondant and gp details. I also used metallic thread for the strings so they would be straight. I didn’t like the look of the strings being squiggly on the ones I had seen done in bc. The strings show up much better in person than the photo. Hope that helps! Good luck!
Here is a link to my cake.
Happy Cakes
