It doesn't take any special skills or talent to make simple flower arrangements. Use flower cuttings from your garden or purchase loose flowers from the florist or grocery store. The satisfaction of an arrangement you've created yourself is not just in the craft, but also in having it last as long as possible.
Fill a bucket or sink with warm water. Place the stems in the water as soon as you bring them indoors. Cut them at an angle beneath the water as you make choices as to each stem's height.
Pour flower preservative (found at florists or garden centers and many times comes with your purchased flower) into a tall, clear vase.
Fill the vase a quarter full with water. Stir the water until the preservative dissolves.
Put in nonporous filler, such as stones, florist marbles, pennies (or other coins), sea glass, shells or buttons to half the way to the top of the vase.
Cut and place the flowers, starting with a focal flower. This should be the largest and showiest flower of the bunch. Place it to be the tallest flower in the center of the vase. The filler will hold the flowers in place. Cut the rest of the flowers so they cascade downward from the focal flower.
Add more filler (stones or other) when all the flowers are placed to within an inch of the top of the vase. Add more water if needed.