The counterpart to Photoshop layers in the old cartoon-making industry is the acetate on which the scenes and characters were painted. And like acetate, layers can be flipped and rotated. But unlike acetate, layers can be stretched, squished, and have their opacity reduced.
In the following steps, you will create a reflection of the sky in the floor. To achieve that effect, you will copy the Sky Layer Set, merge the layers in that set into one layer, flip it vertically, and then transform the set to create the illusion that the sky is reflected in the floor. Whew! Here we go:
Flipping, Reflecting, and Transforming the Sky Layer
The Sky Gallery.psd image should still be open. On the Layers palette, right-click ...