By using ctrl + the plus or minus button, you can adjust your zoom of the image.
By pressing space and moving your left-click mouse at the same time, you adjust your position on the image without making edits with the brush tool, or more.
To start, create make a mask on the base image of what you do not want to be seen to create a transparent background.
Gradient maps tie colors together when working with different images, when placed on the top layer it effects all layers below then you can adjust the color of all layers.
By using cntrl + t you can adjust the size of your image.
My Example)
Nothing special, just took 3 images and blended them together with just a few of the tips he used.
