I'm thinking you've got this nailed except for perhaps the right side. looks a bit blurred to me and I can see lines instead of a gradual gradiant. makes it sort of look like there are ridges. hope I explained that.
anyways that's what it looks like to me. and I must say it is and exceptional piece.
ahhh I see. I was really hoping that you could tell me the method to get those ridges in 3d shape. agree with you on the imperfections bit, totally, that's what really makes artwork sing and resonate for me.
You may have noticed a common element in most of my pieces - the darkness. For others, their medium is light - for me it's dark; the darker the better.
Most of my work starts of light, but I'm never happy with it until I've darkened it sufficiently. For me, I think it helps to draw focus to the main object in the piece.
If you're referring to the Realistic Glass & Glass Pills tutorial, then this isn't quite the same. This was a Shape 3D render; the texture and reflections were part of the base image, but having taken a look at the tut many of the same enhancing principals apply, such as curves, blending modes and opacity.