Flower decorations are used as accessories too like boutonnieres that are worn by grooms, attendants, ushers and bride and groom's fathers. They are made from single or several small buds and are worn on the left lapel of the jacket. Corsages can be worn in a variety of styles like pin_on, wrist or handheld and are made of either a single bloom or a small cluster of blooms.
To get a beautiful flower design or an arrangement, you don't need to show all of these three. The most important here is that your design has ornamental flowers; you will still get a terrific and an artistic flower arrangement.