How does Meitu Xiu Xiu fill another picture into the cloud below?

1, whether it's Mito Xiu Xiu or PS, the general idea is the same.

2, that is, cloud cutting and deleting.

3. Then copy other pictures, put them under this picture, and adjust the position.

Note: The following is to extract and delete two clouds by using the channel in PS; You can then save it as a picture in PNG format.

4. The following PNG pictures can be processed by PS, Meitu and WORD.