Changing Background From Single Color

Ok first you open the picture to change the background .

here is the picture

of the mine and carefully select the background with magic wand tool or the left side of the workspace modify the selection 1px in and 1px feather then remove the background of blue color background. In the previous lesson making a background to attack the background .
The final version of the image should look like that.


The Final Image after the Background Changing.