Make the images for a small social media ad test

Help me make the images for a small social media ad test.

What I'm advertising: [offer or product]
Who it's for and where they are: [customer and area]
Platform: [e.g. Facebook and Instagram]
Real photos I have: [describe]
What makes it different: [one or two points]
Tools I'll use: [e.g. Canva or Adobe Express, plus ChatGPT Images or Gemini]

Ask me up to 3 short questions first if anything important is missing. Wait for my answers.

Then:
1. Three different ad concepts to test (e.g. the product, the result, the person), each with a headline of no more than 6 words.
2. For each concept, which of my real photos to use. Never suggest an AI image that shows my product or results; use my real photos for those. AI images only for backgrounds.
3. The sizes I need for my platform. Tell me to check the platform's current ad specs.
4. Short, general steps to make each size from a template.
5. What to compare after a week, and a reminder that ad claims must be true and backed up.

Only use what I've told you, leave blanks for anything I haven't given, and don't invent facts or results. UK English.

If you can create images here, offer to make the ad images once I've approved the prompt.

Stay in this ChatGPT chat. Do not turn on apps or connectors, and do not use memory from another chat.