I think models are fine. I never really took one and inspected at detail though.
I would increase the light in the scene. I would also try a different material. AFAIK pasta is doesn’t have so much texture (color variations). They look like they’re made of wood/paper.
Does your material have some form of translucency? If it does, and assuming you’re using cycles, I would try rendering with full GI sampling.
Looks good
You can add a “Lens distortion” node, and change the bottom value to about (.01) This will make your render look a little more realistic (as if the picture was taken by a camera)
I hope this helps.
Good luck