If you are looking for skills that will help you in creating cubes, and understanding gradients etc, this tutorial is perfect for you. However, if you are wanting to make 3D photo cubes, I have written a new tutorial that let’s you use the 3D features in Photoshop to make this effect much quicker.
Otherwise, read on!
Right click/Cmd click… when the dropdown menu appears, select SKEW
Click on the right middle square and drag up until you get your desired angle. Press Enter/return to apply the transformation.
Drag out the copy to the left. Hold down the shift key to keep the baselines aligned.
You may also want to make this side a bit thinner by clicking the left middle square (node) and drag it in a little bit.
drag each corner until you get a good match. Be sure the corners fit nice and snug. This step will take a bit of practice to master.
Image>adjust>LEVELS slide the middle triangle over to the right to darken up the mid-tones. Repeat for the left side. This step adds more realistic lighting to the cube.