Colorize a Black and White Ansel Adams Image

First I looked for an image from Ansel Adams on google, and pasted it into photoshop. Then I looked for a picture of sand, and matched the color of the image, and set the opacity of the brush to 35, then I looked for an image of mountains and of a morning sky. Then I took the color from both those images, and set the opacity to 40 for the mountains, and 50 for the sky.