This is an example of what my touch up usually accomplishes.
Dillon from Rolling Western, specifically this leather cowboy look. A model featured in Smash Ultimate, was going to be ported as a playable character over "wolf". I was comissioned to make a render that can be modded into Ultimate to atleast stand with the rest of the high quality renders.
As all my other renders do, I focused on getting a Low Quality Low Texture model looking good in high resolution. I had to make my own materials, buff up textures and even re-topologize for higher poly counts and smoother meshes, my end result is as you see.
Usually my renders are meant to be used as character select portraits, but can be repurposed for anything else as well.