You may start by placing your foliage that you will use in a water vase. You have to make sure that you keep it around the lips or edges. Stick with the plan to place them the lips or edges of your water vase with a layer of your Foliage. When it is too big or too thick, it ends up detracting from your cut flowers. And if it is small or too thin, visual contrast will not show.
Always Plan. You may postpone your flower shopping until the last day before your wedding but it is always wise to plan ahead, as you may end up spending more than you expected doing the last_minute purchase. Moreover, planning ahead for your wedding flowers also gives you enough time to purchase the flowers that you want to have at your wedding rather than picking the available ones.