Number of images? Most likely just one final edited image depending on complexity (the ones Mr. Lindroth is showing here in his albums would be enough for one final image)
Before and after images
and screen shot with layers showing in Photoshop or Photopea
required? YES
Very important:
This assignment requires you to shoot different phases of the montage with the same background and using masks to reveal the subjects. Screenshot evidence as you work on this montage are mandatory (see MrL’s album).
Here is an album by Mr. Lindroth that shows the steps of this technique:
Mr. Lindroth’s Juggling Montage
Mr. Lindroth’s Floating Montage
Here are is this technique done by NPHS student Dylan Narkawicz (click on image to see it larger)
Professional Photographer: Lauren Rosenbaum
Here is a Photoshop Tutorial on this process: