Semmi-pistol, dazzle paint #lowskillboy

Hi guys, I haven't modeled for a very long time. Unfortunately, 3D modeling is just a hobby for me, but I would like something more. I want to grow and develop, but no one can get feedback, and it’s far from always possible to find your own mistakes. Therefore, I ask you for help. I will be glad to any feedback, who will not be lazy, give feedback on the shaders in the blender. Thank you in advance.