- Add a reflection to windows in a building and change the colours with a clipped adjustment layer. Add art to a billboard shape with rounded corners and perspective.
- Create perfect silhouettes for your vector art. Mask multiple layers with a single base shape and apply layer effects to the entire group.
Thanks to @OwenGoss for letting me use his art from LandFormer for iPhone. Go check it out!
Addendum: You can use any layer as a clipping mask, not just vector layers. Plain-old bitmap layers work great too, if you need a “paintable” mask, or if you have a transparent PNG you want to use as a mask, for example.
Download the Photoshop files used in this screencast (except for the LandFormer artwork).