Blurring Background In Photoshop

Blurring on Photoshop

The first picture shows that I went around my artist by using the Lasso Tool and then pressed Modify and then clicked Feather.
The second screen shot shows that I right clicked the artist that I used the Lasso Tool and clicked Select Inverse which meant the background will change and not my artist.
Lastly after Inverting the image, I selected Filter and then Blur and then clicked Guassain Blur and changed the pixels to 6.