Great work, Colt45John, love your creativity.
One thing you might want do though is pay attention to the scale.
On a lot of these you're way off and it looks 'unreal'. The effort you
go to for the lighting and shadows is all for nought when the scale's out.
My advice would be to use the distance between the cassette spindles
as a scale guide and use that in relation to other things in the image as the
cassette size is the one consistent in the size of radios.
Good luck! Looking forward to seeing more!
Rock On.