Choose a style or theme for your wedding that will help you decide which decorations you want for you event. Use your wedding dress as a guide style. For a large formal event you may need more wedding decorations than you would for a small party on the beach. Consider color schemes to help you tie everything together. Flowers, linens, bridesmaid dresses, cakes and flowers should look as though they belong together even if they aren't exactly the same color. Use a wedding planner color wheel to help you decide on accent colors.
Look at the time of year in which your nuptials take place. Also consider the time of day you are getting married. For example, an evening wedding in the winter may require darker colors, extra candles and muted flowers, while an afternoon wedding in the summer may require light airy colors, bright flowers and handheld fans for guests to cool themselves in the heat. Pick your decorations based on your location. For an indoor ceremony you may have to look at candles, flowers and pew decorations, while for an outdoor ceremony you may have to look more at arbors, paper lanterns, plants and aisle runners. Look around and use the atmosphere surrounding you to help choose your décor.