DALLE3 and gpt-image-1 Prompt Tips and Tricks Thread

Interior Designer here, bringing 3D Chief Architect CAD renderings over to enhance photographically, or, occasionally, populate with additional objects and atmosphere. I need to prompt strict adherence to all elements of my baseline canonical rendering. After succinct, precise prompts detailing what needs to be accomplished, my prompts to “HARD MASK”, “MAKE NO CHANGES”, “NO REINTERPRETATIONS” to my canonical, non-negotiable, FIXED baseline rendering consistently go unheeded. Design drift that changes those “fixed” elements seems to be the preferred output. HELP?!?