diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index bf903db52..a45124012 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -8,6 +8,7 @@ Here's what you can do to help:
 - Be part of the discussion by helping out with [existing issues](https://github.com/kriadmin/30-seconds-of-python-code/issues) or talking on our [gitter channel](https://gitter.im/30-seconds-of-python-code/Lobby).
 - Submit [pull requests](https://github.com/kriadmin/30-seconds-of-python-code/pulls) with snippets you have created (see below for guidelines).
 - Fix typos in existing snippets, improve snippet descriptions and explanations or provide better examples.
+- Before submitting a PR for any new snippets go through [this](https://github.com/kriadmin/30-seconds-of-python-code/projects/1) project. If your snippet is them, then go ahead and submit a PR. Else if it is in the done column, sorry it has been already implemented.If it is in any other column submit a PR and give the card's link in the description section of PR.
 
 ### Snippet submission and Pull request guidelines