PHOTO 1
PHOTO 2:
The model is HORIZONTAL!!
Drag your empty background image in PS
Then drag your model image ON TOP of empty background image
Select the OBJECT SELECTION
4. Hover over the main subject (your model) so they are selected PINK
and click ONCE to select (marching ants)
Make sure the image of the model is the TOP layer.
If not, click and drag it to the top of your layer.
Click on the top layer
Click the mask button
Save as both JPEG AND PSD.