@bigpetr, beautiful!!! That however is not a model anyone are going to be able to download and build. It's also made from styrene, PVC, or some other kind of plastics.
The ability to scratch build lies with the builder. The impression I got was a question about "UHU" designing a detailed Y-Wing model. That is not what Bigpetr is doing, he is making a model miniature. His expertise would allow him to build whatever he set his eyes on.
There is a need to differentiate between a downloadable model, and the billions (it seems) of scratch built models that people have made.
@Revele-Fan, modelermagic.com had a lot of reference material that would be great for greeblin' but nothing for building a proportional accurate model. No orthogonic views, ( or, No 3 way views), nothing, no CAD files. Beautiful models that people showcased.
As Bigpetr states, you need a base model. Really good large 3 way views work, but that gets hard fast, unless you want to Pepakura you way through and just do graphics of all the details.
I have found (since I started reading this thread 15 minutes ago) an .skp model that looks pretty good, though it does not have a cockpit. SketchUp Warehouse has a few there. If someone wants this file, tell me what format you want it in. I can't convert to Pepakura though. It takes a lot to build paper models from files like this. Many errors must be corrected, and you end up with a different CAD model, but one you can unroll.
Example:
