diff --git a/README.md b/README.md
index d2d7fd34..d896bf4d 100644
--- a/README.md
+++ b/README.md
@@ -47,11 +47,20 @@ Dependencies:
 * Kirigami Addons
 * hfd-service (optional: for vibrations)
 
-To start the phone homescreen in a window, run:
+To start the shell in a window, run:
+
 ```
 QT_QPA_PLATFORM=wayland dbus-run-session kwin_wayland --xwayland "plasmashell -p org.kde.plasma.mobileshell"
 ```
 
+Useful options:
+- Specify the `--output-count` flag for the number of displays
+- Specify `--width` and `--height` for the window size
+
+```
+QT_QPA_PLATFORM=wayland dbus-run-session kwin_wayland --xwayland "plasmashell -p org.kde.plasma.mobileshell" --output-count 2 --width 360 --height 720
+```
+
 ---
 
 <img src="https://invent.kde.org/plasma/plasma-mobile/-/wikis/uploads/19a607bb68faa76bbc9f888e33a3aa9a/konqi-calling.png" width=200px>