diff --git a/docs/How-To-Open-a-Homebrew-Pull-Request.md b/docs/How-To-Open-a-Homebrew-Pull-Request.md
index 1b1d039102..4f3af9639a 100644
--- a/docs/How-To-Open-a-Homebrew-Pull-Request.md
+++ b/docs/How-To-Open-a-Homebrew-Pull-Request.md
@@ -67,6 +67,15 @@ Notability [auditor](https://github.com/Homebrew/brew/blob/638a3dc3a33c4c2029db0
 
 ### Cask-related pull request
 
+Before getting started with a new cask, please read the [Acceptable Casks](https://github.com/Homebrew/brew/blob/master/docs/Acceptable-Casks.md) and note that we cannot distribute every single piece of software and have to draw a line on “notability” somewhere. If you don't meet notability requirements you might consider [creating your own tap](https://docs.brew.sh/How-to-Create-and-Maintain-a-Tap) (casks can also be installed from a tap). Of course, we would be happy to reconsider in the future!
+
+Notability [auditor](https://github.com/Homebrew/brew/blob/638a3dc3a33c4c2029db058cf3d399008621e973/Library/Homebrew/utils/shared_audits.rb) will fail on repositories that do not meet:
+
+* **>29** days old
+* **>29** forks
+* **>29** watchers (Github only)
+* **>74** stars
+
 1. [Fork the Homebrew/homebrew-cask repository on GitHub](https://github.com/Homebrew/homebrew-cask/fork).
    * This creates a personal remote repository that you can push to. This is needed because only Homebrew maintainers have push access to the main repositories.
 2. Tap (download a local clone of) the repository of core Homebrew casks: