One of my first attempts in blender. Since I like rock and roll very much, guitar was my first try.
Nice job ppather! I love me a good Les Paul model :)
The biggest thing that sticks out to me is the lack of reflections. It's like the metal has nothing to reflect in the scene aside from a lamp and a grey backdrop. This creates an unrealistic result because in reality there's always a lot to reflect.
Are you using an environment HDRI (or at least a JPG) texture? It's the best way to get a "world" to give your materials something to reflect.
See these lessons:
good work... :D