Stick to colors that compliment each other.  Consider the colors found on the dress or suit, and make sure your theme matches appropriately. If for prom, consider using your school colors. You can look at an interior design color wheel for inspiration if necessary.  Choose colors that are opposite from each other on the wheel — for instance, yellow and purple, or blue and orange. Purchase (or pick from the garden) flowers that are close to fully blooming, and keep them in water before you make the corsage. Plan on getting three to five blooms, depending on their size. In general, try to choose sturdy flowers that can hold up to some wear — they'll look better at the end of the night than delicate flowers, such as tulips. Here are some popular options to consider:  Roses Daisies Orchids Lilies Cymbidium This is an accent to the main flowers. It adds fullness to the overall corsage and highlights the color.  Examples of filler flowers include:  Baby's breath (gypsophila) Fern leaves Eucalyptus
Decide on a color theme. Choose your flowers. Choose a filler flower.