Update README.md

README.md

@@ -13,4 +13,10 @@ Originally forked from ManlyMarco's [KK_SkinEffects plugin](https://github.com/M
 ## Usage
 Expressions can be added individually for each character, using the ❤ -> Sex Faces menu inside the Character Editor. You can set a maximum of 10 expressions for each combination of experience and H scene event. You don't have to add a face for every combination, the rest will be handled by the game as usual.
 
-Extra facial expressions can be set in the same menu, under Extra Expression Controls.
+You can just use the right sidebar to change expressions if you want to, but the Sex Faces menu gives you more powerful controls. These are:
+
+- **Pattern mixers:** Morph between any two eyebrow, eye, or mouth patterns.
+  - **Ratio:** Amount of morph between the two patterns.
+  - **Openness:** The *maximum* openness for the pattern. The actual openness may be smaller than this e.g. while the character is blinking or isn't talking.
+- **Head:** Change the rotation of the head around all 3 axes (pitch, yaw, roll). This is relative to the game's own Head Direction option. If you set Head Direction to Camera, the character's head will always be tilted at the same angle relative to the camera.
+- **Iris:** Change the size of each iris.