First we had to choose a main element, in this case the background which is a cloudy sky.

Then we had to choose the other elements, the forest of trees, the wooden house and the mountain. We had to turn the mountain upside down to get the base on which to place the other images. We selected the parts of each image that we wanted to keep, for which we had to use masks. Then all that was left was to join it to the background and scale it to get the perfect size.