Hi there I hope you are well =) . In these days I made this diaorama and I think I did pretty good thing in this model. Firstly I modeled gun in blender then I converted low poly version to high poly in zbrush then I baked model in subtance and I painted in again in substance. It was a pretty good model I learned lots of new things =) . I am planning to do much more diaorama in a next days See ya =)