i hear ambient lights should never be used.
I too would use ray-traced shadows and directional lights. Unless you intended for the light to be coming from a light bulb, in which case you'd use a point light, probably not with decay as I don't think it's noticeable in a room.
the depth map shadows are probably whats causing the distortion that dave mentioned, and on the buds themselves.
Generally you'd use depth map shadows for render previews and shadows in fog
you could also look into blurring the reflection on the floor.
One thing I notice when looking at something close to the table i'm at right now is the shadows don't have crisp edges and there is a fluorescent light bulb behind-above me. you should switch to ray traced shadows and blur the edges.
You could also look at bounce lighting too. I'm not sure how noticeable that would be from varnished wooden floor to ear buds. take a look at it in real life and see.
i agree with stwert again with the connector thing. it looks rather shriveled, you should fatten it up a bit.
I'm guessing you know how to do everything i suggested?
that's a "Ch" pronounced as a "K"
Computer skills I should have:
Objective C, C#, Java, MEL. Python, C++, XML, JavaScript, XSLT, HTML, SQL, CSS, FXScript, Clips, SOAR, ActionScript, OpenGL, DirectX
Maya, XSI, Photoshop, AfterEffects, Motion, Illustrator, Flash, Swift3D