Exercise: use IR to open the animation picture-expand the canvas of the picture to the required size-select the first frame of the animation panel-link all layers-drag it to the appropriate position-drag the JPG background picture-copy the background picture and put it at the bottom of the animation layer-reduce the opacity of the first frame-use the marquee tool to feather the selection by about 6 according to the size of the animation picture, and then delete the pixels in the selection. It's done.

Special note: always operate in the first frame of the animation panel.