diff --git a/README.md b/README.md
index fa01348..e522980 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,14 @@ Follow the guide at https://mkbd65.xengi.de to build a case for your phone.
 
 _TBA_
 
+Edit the file `main.scad` and import your phones scad file from the `lib/` folder. If your phone is not in there it's
+not supported yet. Please open a ticket or join the #mkbd65 channel on hackint via IRC or Matrix and ask for support.
+Adding support for a new phone is pretty easy as long as some requirements are met.
+
+If your phone is supported and you have edited the file, run this command to generate the 3MF and STL files for your 3D
+printers slicer software. You can use whatever material you like. PLA has proven to be easy to print and working well
+for the case.
+
 ```shell
 make main
 ```