You are to create two edits.
Each image must have the before edit image and the final image and screen shot with layers showing in Photoshop or Photopea.
Mr. Lindroth’s Sample Slide Deck – Fill With Photo Pattern
Tutorials
Written Tutorial Option
Fill A Photo With More Photos Photoshop Essentials Tutorial
Photoshop Video Tutorial
Here is a variation to increase contrast and view of main face:
Here is an explanation of this technique here:
Variation for Fill a Photo with Photos Pattern