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.
You could create an arrangement for any size vase, the larger the vase, the more flowers and greens to use. For Christmas time, use red, white and maybe even green flowers (like green button mums). Also choose from a variety of greens and evergreens out there. Accent a red rose in a bud vase with some baby's breath and cedar. Deep red alstroemeria are especially beautiful. There are many other flowers that would be perfect to use for Christmas arrangements, the link below will take you to a complete list of flowers, foliage, and evergreens for Christmas floral design.