This is just my first try at creating game-ready objects. The goal was to create an antique KA-BAR knife with traces of use on the blade and handle. Create PBR textures from the high-poly model. And all this from scratch. I complete all pipeline steps, from modeling highpoly and lowpoly mesh to UV-unwrapping it and creating textures in Substance 3D Painter by myself. And using the marmoset toolbag, I made a 3D view for the browser. Thanks, CG Masters, for the wonderful tutorial - Combat Knife Game Asset! And especially Chris Plush!
https://www.artstation.com/blengine
https://www.artstation.com/artwork/kkYPx
Finally, my workflow came to 3D space, and now I can make 3D previews in Marmoset Toolbag.