PS Design make village environmental propaganda poster on turtle shell

Tutorial learning how to use Photoshop to put castles, turtles, deserts to synthesize an eco-protected wallpaper poster, mainly used, channel masks, layers, filters and so on tool commands, this foreigner's tutorial is extremely brief, learning to need some foundation, the following one to learn.

Create a new document 600x350 pixels, open the turtle picture, with a pen to dig out.

Drag into the document you just created.

Open the castle material, choose > Color Range. Use the eyedropper to pick up the sky area, as follows.