n8n Character Workflow Build

I need a complete n8n workflow that lets me generate and keep re-using one visually consistent character through Veo 3. In practice, the flow should accept a short prompt or scene description, pass it to the Veo 3 endpoint together with the fixed character profile, receive the resulting asset, and store it so it’s easy for me to fetch later.

The key point is consistency: no matter how many times I run the flow or change the background prompt, the core character must look identical—same face, proportions, colours, style, and overall vibe. I’m already running a self-hosted n8n instance, so please build the solution as a standard JSON workflow that I can import.

For clarity, here’s what I expect back:
• the finished n8n JSON file, ready to import
• brief setup notes explaining any required credentials or environment variables for Veo 3
• a short set of instructions on how I can tweak the stored character profile on my own

If you’ve worked with Veo 3 (or similar generative APIs) inside n8n before, let me know. The faster we can get a reliable, repeatable character generator running, the better.