Very nice. I would love to see this with the fret/neck (don't know guitar parts well) cropped out and on a plain white background. I think that would really make the red and green stand out and you'd have a great abstract image.
Love the colors here and the composition. The green picks compliment the red of the guitar very nicely - hee they exist in harmony since we are also invoking music just by looking at the objects. My only critique is the background detracts from the main focus. If the background was a solid, flat and deep black it really would have made the red guitar and the green picks litteraly "pop" off of the screen. As it is, the texture of the black background is distracting and the "flat" greyish black tone does help the image "pop".