These two pictures demonstrate different focal points. In the first picture the focus is clearly on the mermaids face, which blurs the picture behind it. However, in the second picture, the focus is on the picture behind the mermaid, making her face sort of blur.

For these two pictures I made my shutter speed 1/4 of a second. In the top picture, my lip glosses are sliding across my desk and the photo captured them with a little active blur. The second picture is a DIY stress relief bottle my little sister made. I shook it to get the glitter moving then took the picture. You can see the streaks where the glitter moves and which ones were focused on.