I am literally doing this step now, however I am using the diamondback for my dads bow. It was suggested to me to trace the separations between the light and dark with a fine tipped permanent marker to make it stand out, but the fake copperheads I have for my bow, i realized I am nervous about marking up. I am using TB3, and used some scrap to check out the look when using tru oil on 1, and light tb3 the tru oil on the other, to see which looks better to me. I will post results for you, and update with what you do as well. Jim