If the flowers appear too bunched up, try cutting them at different lengths for more variety. Don't worry if some blooms don't stay in exactly the right position at first. Continue to the process by adding more flowers, adjusting their height and position as you go. The stems should all fit comfortably in the neck of the container and begin to hold their positions better as more flowers are added.
Putting it all together _ Once you have selected your flowers and vase, its time to start putting things together. If possible, first cut each flower stem diagonally about one inch from the bottom while holding the end of the stem under warm water. Use your kitchen sink or a large basin. This helps ensure each stem will absorb moisture and nutrients easily. As you cut each flower, transfer it to a temporary "work" vase, which should be halfway full of water.