This is nice modeling. The only thing I you think you could improve is to make the edges crisper. Since you left the background images in the blend file, I was able to cross-check, and your guitar is pillowy, while the model has pretty hard edges, like something made of wood does. But the worm gear and stringing are really good.

Yeah, you are right about the puffed part. Guess, I did not realize it while modelling. A few days of not seeing it and yep, now I can notice it. Thanks asterlil!!!