Update README.md

README.md

@@ -8,7 +8,7 @@ This is the [Face Landmark model](https://developers.google.com/mediapipe/soluti
 
 The model detects 468 3D markers on a face centered in an image. 
 
-**IMPORTANT:** For faces not centered in the image you will need another model to detect faces, and crop them before feeding them into this model.
+**IMPORTANT:** For need to be centered and cropped to fit the image. For images with faces not in the center or for multiple faces, you will need another model to detect faces, and crop them before feeding them into this model. For example you could use [Blaze Face](https://huggingface.co/unity/sentis-blaze-face) to detect them.
 
 ## How to Use
 * Create a new scene in Unity 2023