how to stretch background

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i did the top one in photoshop in 5 seconds do u see how easy it is to stretch the background like that when there are large portions that are solid colours? do you see how convenient it would be to place a finger or whatever over the space in the top right where it isn’t easy to stretch the background?

there is about a 0.0000000000001% chance that is real so u can all take a deep breath and relax