CS4-AE Text Mask in a Nested Comp

Steps:
1. Drag an image into a Timeline layer. This image will be seen through the masked text.
2. Type some text. This will become the mask.
3. Layer > Create Masks From Text
NOTE: A new layer is created holding a mask path for each letter of the word typed.
4. Apply the mode: Silhouette Alpha
5. Create a new comp to nest this text mask comp with another image behind it.