Configure your own Image Creation API Using OpenAI DALLE-3

How it works: Webhook URL that responds to Requests with an AI generated Image based on the prompt provided in the URL. Setup Steps: Ideate your prompt URL Encode The Prompt (as shown in the Template) Authenticate with your OpenAI Credentials Put together the Webhook URL with your prompt and enter into a webbrowser In this way you can expose a public url to users, employee's etc. without exposing your OpenAI API Key to them. Click here to find a blog post with additional information.

Help me set up the n8n workflow "Configure your own Image Creation API Using OpenAI DALLE-3" (https://n8n.io/workflows/2217). It uses: OpenAI. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.