this is the best of the numerous guitar shots. like it because you've got really close in. Lighting is good and the frets really work againt the strings. good work.
Its well composed and interesting idea. Also I like the very small DOF youve got there but in that situation you have to make the focus absolutely right. You can feel the texture of the stingboard but the second and third string might be in better focus. Also I think that if you change the lighting to get rid of the bright spots on the left you could increase the contrast a bit.