Hello, I’m working on ugh head mushroom. I rendered the texture and when I imported the texture to a regular mesh it looked fine, but after I added the hat to the hat accessory the quality of the texture became ruined. If you could help me out that’d mean a lot!
One issue here is your topology and how you unwrapped the model in Blender. I suggest you take a look at some tutorials on YouTube the cover bot the modelling and UV process and learn how to improve.
As for it looking low definition, I believe @Lie_Star’s response should help with that. Good luck.