Short summer, about project:
In future, I will try to make more complex high poly models, because, more details you bake in, easier it is to texture. I had problems in some parts of the model, while texturing, because it had no detail. Also, when baking, I duno if it's only me or what, but I think that Blender+Substance painter combo, flips normal map. I had to invert it, in sketchfab. ALWAYS CHECK THE NORMAL MAP, BEFORE TEXTURING.
About substance painter, jet again, I don't like, how it looks. Every model made in substance, has that substance painter look, that I don't like. I will try to learn Quixel and see how it does.