Blender - make improvements for photorealism

I have a Blender project. Need you to make any adjustments you can for it to be more photorealistic, it's already very good, but need someone who can play with material to be better, here are some suggestions: - adjust lighting or scene to give better impact on the surface of the product - adjust blacks on the arms of the glasses so that they look more photorealistic - white on the body of the glasses looks too rough when zoomed in, maybe needs improvement - eye glass shield on the device is supposed to be like this colour: ([login to view URL]) but right now it's too dark and material is not visible. budget is small since most of work is already done. But if you do a good job than i will hire you for future big projects.