How can a photo background be removed?

Open the image of the photo background that changes. Select Background Eraser Tool from Toolbars.
Select the option of Brush size from the Background Eraser Tool tool option and select the Tolerance 27%. Now drag the Eraser to the center of your photo and background. See only Background Removal.

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Something else will not be removed. Open the image as a background. (File> open). Then press CTRL + A and CTRL + C from the keyboard.
Then the whole image will be copied. Now come back to the main film. Then press CTRL + V from the keyboard to paste and CTRL + T from the keyboard press together to increase the background. Go to Layer Palette and drag the background down with the mouse or Ctrl + Shift +} from the keyboard. Then the background will go up. Save the file by clicking on File> Save As at the end.
But before changing the background, make sure that the quality of the image you want to set up as a background is. Many people want to place their children's picture on a flower. For them, first look at the resolution of the picture, or the background picture will be larger or smaller than the picture. Or if the background is stitching then after the print, the background seems to be dull.
And the most important thing is that the image has a light compatibility for the background image. It is seen that the background image is very bright but the subject is very dark. If you choose a picture compatible with the subject, the picture will be very natural. But if you can not decide what to give back to the background, you can give a nice shade using the gradient tool.
If you have any unevenness due to Subject Selection, you can combine it with the background using the Blur tool, which will make your picture a bit natural.