After abandoning the double indirect method, I used pattern pieces to put swirls on the guitar top. I find it so much easier, plus I can change my plan, which, as a person with a Gemini ascendant, I love. I decided to fill in with black instead of color on the whole top.
Some say it took 1 day to create the earth. It took me 22:40 to make this guitar top, so I feel almost god-like. Almost. Now for the sides, fretboard and back. Maybe a little less detail there.