diff --git a/README.md b/README.md
index 6c9ec60..48955cf 100644
--- a/README.md
+++ b/README.md
@@ -14,13 +14,12 @@ reflection the center of mass of the binary image is used to determine
 the corneas location.
 
 # Usage
-1. Move the rectangles to set the rois around pupil and the corneal reflection.
-2. Use the sliders to adjust their sizes.
-3. Enable Tracking preview in pylonRecorder and enable the "binary" checkbox to
+1. Move and resize the rectangles to set the rois around pupil and the corneal reflection.
+2. Enable Tracking preview in pylonRecorder and enable the "binary" checkbox to
 show the thresholded image. 
-4. Use the sliders to adjust the threshold until
+3. Use the sliders to adjust the threshold until
 the pupil and corneal reflection are well separated from the background.
-5. Disable the "binary" threshold once you are happy with the tracking result.
+4. Disable the "binary" threshold once you are happy with the tracking result.
 
 ## Plugins
 To use this plugin for PylonRecorder you need to download and place