re: Asking subject and manufacture of marquetry.

Well done Uwe. I would have done it about the same way except of course you use a knife and I use the chevalet.
There is one other thing you are doing different. It appears that you are using a small torch to completely shade a light coloured veneer rather than just using a dark veneer in the first place. Can you explain? I do all my shading with sand and don’t quite get the idea of the torch.
Your effect is excellent. Good illusion.