
Combining two photos to create a new look is a fun way to learn various techniques. We’ll learn how to use the Circular Marquee tool from the center, adjusting the opacity of a layer, creating a path from a selection and adding text along it in the process. Let’s get started.

Open the support file in Adobe Photoshop, an image from NASA in the public domain.

Open an image of a person holding a circular object, such as a ball. This one is by Ronald Bloom and available through iStock at http://www.istockphoto.com/file_closeup.php?id=277310.

Now in the earth photo, click-and-drag a ruler guide from the top and bottom, halfway across so it’s in the middle. In the earth photo, subtract the entire length by 2 to get where the cursor needs to be exactly. Note: if rulers aren’t showing, press Command-R (PC: Control-R).

After drawing the ruler guides, hover the cursor over the center of the photo, where the two guides cross. Hold Option (PC: Alt) and click-and-drag the mouse. Hold Shift to maintain proportion. Once the Elliptical Marquee tool is around the earth, release the mouse button then the keys.

It should look like this.
