Looking for help to take a 3D render and make it photorealistc

Looking for help to take a 3D render and make it photorealistc will pay someone to teach me how to do this.

you mean using a specific 3d rendered image and making it look photorealistic? that can be done using stable diffusion with a realistic base model, and with controlnet. what is your level of knowledge of any of these?

I have tried different models in controlnet but it's always struggling to get the right details, what models would you suggest?