diff --git a/How-to-Contribute-to-this-Project.md b/How-to-Contribute-to-this-Project.md
index 335e24c..7eb721b 100644
--- a/How-to-Contribute-to-this-Project.md
+++ b/How-to-Contribute-to-this-Project.md
@@ -79,3 +79,10 @@ Peer reviewers may contribute this feedback as an issue or pull request with a f
 # How to Translate a Skill Tree
 Translators may contribute translations by uploading the .svg file to the [Skill Tree Generator](https://schme16.github.io/MakerSkillTree-Generator/).   , translating the tiles, downloading the .svg file and submitting as an issue or pull request in Github with 'Translation to [Insert Language]' in the title. Translators can receive a contributor sticker in the mail if they wish.
 
+# Referring to specific tiles
+If you're submitting edits to a tree, you may wish to refer to the column a tile is in to make it easier to spot, or to be even more accurate, the row and the column.  Here's a color-coded guide for rows and columns: 
+
+![Numbering Convention - Rows and Columns](https://github.com/user-attachments/assets/4fb32ec6-9a60-4750-9d06-02c293fd10e6)
+
+
+