Looks like you tried this handheld, I would suggest a tripod for low lighting situations like this. The closet background also detracts from your subject, which is the guitar - a plain wall would have been a better background.
Composition is good, I can see how the use of lines was intended to strengthen the imagery. I'm not sure the background works as well as you intended. Unfortunately, there are some blown-out spots on the guitar and also on the closet door. The lack of focus is severe here and (if intentional) doesn't work when considering the impact of the lines. This is a decent idea but the shot is technically weak with regard to exposure and focus, and those deficiencies will be hard to overcome. Better luck in the next challenge!
Unfortunately, I cannot find a single point in focus. In low light settings such as this, it might be better to set the focus manually with a brighter light, then switch to this dimmer--and wonderfully moody--lighting.