How To Change The Background Of a Image in Photoshop...

Here's an easiest Tutorial to change the background of an image in photoshop

1. Ctrl+J to get layer 1

2. Create a new layer between background and layer 1 and color it to what you like

3. Click layer 1 and then click “image”–> “adjustment”–> “Desaturate”

4. “image” –>“adjustment” –> “levels” and use the eyedropper tool to pick the color above the cat (remember to click the first eyedropper among those 3 in the popup window before clicking the black background). Adjusting levels can change higher saturation and more contrast as you can see the result.

5. Set the layer mode as “screen” then create a new layer on top of this layer. Use “history brush tool” to get the outline of the cat

Finally the you're done with editing…