The curved headstock
The head of my steel string guitars is curved. It does not only stand out as a design feature but facilitates to operate the tuners.
To make the heels appearance more plastic it has a nice chamfer on it's edge.
The elevated fingerboard
The elevated fingerboard makes it easier for the player to reach the upper frets. It also changes the string angle in realation to the top: This "refines" the sound of the instrument.
As the player might be inspired by the visual aspect of his guitar I worked out some nice and interesting pattern into the surfaces of the body, head or bridge. Chip carving is one possibility of many.