1. First, open two pictures that need to be used

2. Drag the temple picture into the cloud picture, and double-click the cloud layer to turn it into a normal layer.

3. Select the temple floor, make a selection with the magic wand tool, and then select ctrl+shift+I reversely.

4. Add a mask, and the effect is as follows.

5. We will find that the spire will lose some details because of the selection of the magic wand. What should we do? The answer is to choose the mask and smear it back with a white brush. The following picture shows the mask state.