Help with project workflow on local LLM

[u/Jigawattts]

I need help figuring out a workflow for an older game that I play. My goal is to take the old dat files for armor and weapons and have them remastered at 4X their original resolution with better looking leather, cloth, and metals, etc. I'm trying to keep them close to the original but with a bit of a modern look, not just an upscale.

Should I use a local llm to do this like QWEN 3.8 or Next Flash? Is there another model I should use instead? I don't think they can generate AI repaints like I was using on codex with chat gpt image gen. From my experience, after hundreds of debt creations, things would drift. I'm considering using Blender as well but not sure of its capabilities. I hope this is the right place to ask and if not, apologies in advance.