Hi there! always glad to help a lost programmer (:,
Well not lost, but we all have to learn something every day, otherwise it's a useless life
Thanks for the structured feedback and let me provide some more info.
Porcelain is probably not the easiest thing to start of with and i'm deffinatly not a pro at its texture.
First of I think it will help a lot if you had a more angled perspective, especially when it comes to a plate. It's hard not making it look flat. Since you've put a dark line up top I take it as its a small angle to it.
The idea of my whole project (it's a scrolling platformer) is that everything is nearly fully perspective free, except for small hints like the black line you spotted correctly, it's supposed to indicate of the plate's interior, I could make it slightly stronger if that would help. I want to make some sample kitchen items to see if this whole perspective-free idea will look good in practice.
Next thing is I would never use dithering on porcelain, it's a glossy surface and the dithering just makes it look matte.
I completely ignored the material properties when I was doing it, will correct it in a sec, you are indeed correct. Let me try to get it to look better. I also want slightly more curvy edges.