How to use Photo Background Changer pro:
Select a photo from gallery or you can take photo from camera.
Crop your image as you wanted
Drag along the area of photo that you want to erase.
Select your eraser size to remove photo
Select your off set
Undo and Redo Option gives the flexibility in background erasing
Press 'Select BG Button' to select favorite background.
Press save to store the permanent change.