Layer > New > Background from layer to convert regular layer to Background.
a a isn't an answer
Forced perspective is the technique that is used when the size of objects and people in the background is diminished to create the illusion of greater foreground-to-background distance.
need help
Create a templete
You will need a mod.
Sort of. Instead of a background you can put a material in the way which is on wafer thin level
You normally create a thread when you want to run a function in the background while processing other things.
forced perspective.
There are many places one can look to find out how to create a studio background including but not limited to magazines, books, many online resources and through friends or family.
photoscape create a background you want then attach ur photo that is already edited.
krishna