The Digital Matte Painting Handbook

The Wintertime Plate

You’ll want to keep the summertime version and work over a copy. Duplicate SummerVersionGroup, and rename the duplicate group WinterVersionGroup. Make sure WinterVersion is above SummerVersionGroup in the Layers panel.

Inside WinterVersion, turn off SummerTreeGroup, because you’ll use it only as reference.

Adding a Winter Sky

To get the mood started for the winter version, replace the sky. Inside WinterVersionGroup, select the SummerSky layer, and rename it WinterSky. Because you replaced and reworked all the buildings, you no longer need the layer mask on the sky. Select the layer mask on WinterSky, and delete it. Now you can replace the summer sky. CGTextures.com has provided an appropriate sky on the DVD named FullskiesOvercast0028_1_L.jpg ...