So for this you can use a lot of tools to select a certain model in you image/photo.
For this chapter/part the video will be mostly the main content.
After you have watched it and if you did it, you now have an image(png). You can drag it on another tab of your photoshop and place it onto your desired background.
If you have any questions comment below.
A/n: sorry if this is so late and it's very short.
Next update: Video of editing a semi-manip with the previous tutorials(and this).
(for the video yeah i think the audio is still editing idk lol)