diff --git a/README.md b/README.md
index ad77d35..77941e7 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 Converts KiCAD .pos placement file to Charmhigh Pick and Place CSV
 
-## usage
+## Usage
 ```
 pos2csv -i test/top.pos -f test/feeds.csv -o pnp.csv
 ```
@@ -19,6 +19,11 @@ pos2csv -i test/top.pos -f test/feeds.csv -o pnp.csv
     --feed    Feed file from PnP
 ```
 
+## Layout
+Board Origin must to below and to the left of your circuit.
+The Charmhigh cannot use negative numbers from the Origin.
+Place a Fiducial footprint to mark the location on the F-Cu layer.
+Use this mark to visually align the origin.
 
 ## Feed file
 The feed file is generated by the Pick and Place. Go through the normal