Add a TL;DR to How to participate

README.md

@@ -17,7 +17,11 @@ git clone https://huggingface.co/safe-challenge-2025/example-submission
 
 # How to participate
 
-Visit the [challenge home page](https://app.dyff.io/challenges/dc509a8c771b492b90c43012fde9a04f) and sign up using the linked registration form.
+To participate in the challenge, you need to do three things:
+
+1. Visit the [challenge home page](https://app.dyff.io/challenges/dc509a8c771b492b90c43012fde9a04f) and sign up using the linked registration form. After verifying your email, you will receive access credentials for the submission platform.
+2. Implement your detector model. You can [use this repository](#how-to-implement-a-detector) as a starting point, but you don't have to.
+3. [Submit your detector model](#how-to-make-a-submission) for evaluation. You can build your submission package yourself and submit it [using a CLI tool](#submitting-using-the-dyff-api) (preferred), or you can [build your submission in a HuggingFace Space](#submitting-a-docker-huggingface-space) and submit the Space using a web form. 
 
 
 # How to make a submission