Creating floral designs that catch a viewers eyes is a skill which good flower designers have. Just like an artist who creates a piece of artwork that captures the viewers attention, the florist needs to be able to create a design that pulls a viewer into a floral design. When pullled into the design, the viewer experiences something that must be good about the designer. It will help them to think positively about the designer.
Next, fill your "real" vase about two_thirds of the way with warm water. Make sure it doesn't leak. Add flower food if available. (Follow the instructions on the packet.) Place a few of your larger blossom flowers in the vase and step back. This will give you a better idea of how to proportion your bouquet. If the stems are too long, simply cut them shorter. If they are too short, try a different container, or add pebbles or marbles to the bottom of the vase to elevate your flowers.