Selecting with Color

I want to select the sky

Play with the light!

Another exercise: 

The green color on the grass looks more alive and not dull

The CrocFrog

Have you ever see a CrocFrog? So, crocfrog is an abbreviation of crocodile and frog. Everything is possible in Photoshop! So I want to make a crocodile but the body is frog. Here's the crocfrog:

Make the image size of crocodile same as the frog

Name the layer for make it easier

Select the crocodile head by using Quick Selection

Don't forget to do Refine Edges to make it more natural

Erase the unimportant parts by creating a layer mask

Adjust the colour