fill in finish step

.github/steps/X-finish.md

@@ -7,16 +7,19 @@
 
 _Congratulations friend, you've completed this course!_
 
-<img src=TBD-celebrate-image alt=celebrate width=300 align=right>
+<img src="https://octodex.github.com/images/dinotocat.png" alt=celebrate width=300 align=right>
 
 Here's a recap of all the tasks you've accomplished in your repository:
 
-- TBD-recap.
+- Removed a file from the head commit of the repository
+- Used BFG Repo-Cleaner to removed a file from all Git history in the repository
+- Avoided accidental commits by telling Git to ignore a specific file name
 
 ### What's next?
 
-- TBD-continue.
+- The Docs on [Removing sensitive data](https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/removing-sensitive-data-from-a-repository) are comprehensive and recommended reading after this course.
+- Try your hand at some of the other features listed in the [BFG Repo-Cleaner documentation](https://rtyley.github.io/bfg-repo-cleaner/).
 - [We'd love to hear what you thought of this course](TBD-feedback-link).
-- [Take another TBD-organization Course](https://github.com/TBD-organization).
+- [Take another GitHub Skills course](https://github.com/skills).
 - [Read the GitHub Getting Started docs](https://docs.github.com/en/get-started).
 - To find projects to contribute to, check out [GitHub Explore](https://github.com/explore).