V-Ray for SketchUp.
Postwork with PS.

Here's what i produced.

Very nice 21D.
For the glass material you should uncheck the "Reflect on Backside". Also increase the "max depth" to 5 (the default is 2) under Global Switches. Oh and lift the glasses just a bit, even 1 mm is enough.

Your scene setup is very good btw.

Thanks a lot for this great tutorial! Perfect leather.

Stunning! Very stylish. I love the details like the accessories or even the electric outlet with the wire
Congratulation and keep on the good work.

@40th said:

Thanks Thom! Really appreciated. I'll try the plugin (on SU7 VrfSUv1.00) any time soon and post back.

I tried your 1.0.1 on SU7 VrfSUv1.00 and i get an error message

Thanks Thom! Really appreciated. I'll try the plugin (on SU7 VrfSUv1.00) any time soon and post back.

@rickw said:

With one or more faces selected, try this in the ruby console:

Sketchup.active_model.selection.each{|e| e.back_material=e.material if e.typename=="Face"}

I suggest you start with 1 or 2 faces to see if it works as expected, since I don't have one of your models to test. If that works for you, let me know and I'll "put some skin on the bones".

How do i use this script? And does this script solves this issue?