Of the many things that you can do in street photography or photography in general, framing is one method of having a photo stand out. It is one of my favorite composition styles. Framing can add a different perspective to what might not be an interesting photo otherwise.
There are many possibilities of ways that you can use framing. This photo was of course taken through a car window. Windows and doors work well. But the possibilities are numerous. Next time that you’re out shooting, have a look around you to see what things you can use to provide a frame for your photo. It’s fun!