Step 1

Open your photo collection, for this I'm use shakira photo with curl hair

Step 2

Click on eraser and choose "Background Eraser Tool"

use Sampling : Once

Limits : Continuous

Step 3

Now start to erase with just one click and press it when you swap to erase

Step 4

Use Lasso tools to erase others 

Step 5

Now you get shakira with no background

Step 6

Add layer and fill with color to make different background

Step 7

You can add any layer to make it great

Done !