Update to X in STEP and README.md

.github/steps/-step.txt

@@ -1 +1 @@
-5
+X

README.md

@@ -14,21 +14,35 @@ _Organize ideas and collaborate using Markdown, a lightweight language for text
 </header>
 
 <!--
-  <<< Author notes: Step 5 >>>
-  Start this step by acknowledging the previous step.
-  Define terms and link to docs.github.com.
+  <<< Author notes: Finish >>>
+  Review what we learned, ask for feedback, provide next steps.
 -->
 
-## Step 5: Merge your pull request
+## Finish
 
-_Great job adding a task list to the file :heart:_
+_Congratulations friend, you've completed this course!_
 
-You can now [merge](https://docs.github.com/get-started/quickstart/github-glossary#merge) your pull request!
+<img src=https://octodex.github.com/images/welcometocat.png alt=celebrate width=300 align=right>
 
-### :keyboard: Activity: Merge your pull request
+Here's a recap of all the tasks you've accomplished in your repository:
 
-1. Click **Merge pull request**.
-1. Wait about 20 seconds then refresh this page (the one you're following instructions from). [GitHub Actions](https://docs.github.com/en/actions) will automatically update to the next step.
+1. You learned about Markdown, headings, images, code examples, and task lists.
+1. You created and merged a Markdown file.
+1. You learned an essential GitHub skill. 🎉
+
+### What's next?
+
+- You can enable GitHub Pages and see your Markdown file as a website!
+  1. Under your repository name at the upper right, click :gear: **Settings**.
+  1. Then on the lower left, click **Pages** in the **Code and automation** section.
+  1. In the **GitHub Pages** section, ensure "Deploy from a branch" is selected from the **Source** drop-down menu, and then select `main` from the **Branch** drop-down menu as your GitHub Pages publishing source.
+  1. Click the **Save** button.
+  1. Wait about 30 seconds then refresh the page. When you see "Your site is published at ..." you can click on the link to see your published site.
+- Learn more about [Markdown](https://docs.github.com/github/writing-on-github).
+- We'd love to hear what you thought of this course [in our discussion board](https://github.com/orgs/skills/discussions/categories/communicate-using-markdown)
+- [Take another GitHub Skills course](https://github.com/skills).
+- [Read the GitHub Getting Started docs](https://docs.github.com/get-started).
+- To find projects to contribute to, check out [GitHub Explore](https://github.com/explore).
 
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