Selecting your viewpoint is quite important and can make your photo more interesting than it originally was. Selecting your viewpoint means choosing different angles and positions to take your photo. It is used by most professional photographers but is not something that many people tend to pay there focus to.
Viewpoint make large impacts on the composition of the photo. Instead of taking photos from eye level try taking pictures from various angles and positions. Photos can be taken in a whole new way by using angles that are interesting and unique. Maybe from above or below, close or far all these will effect the way your photograph turns out.