Bought a cheap guitar body recently on eBay for £5. decided I wanted to do a Beatles design on it.
After sanding the lacquer off I drew my design on in pencil. Then got a a Sharpie thin liner pen and went over my design
If you find it difficult to draw an accurate design you can print out pics from internet then cut them out to use them as a template.
I was going to paint my design with acrylic paint. But decided to test out some coloured Sharpie pens.
Below is the result so far