The different shades of roses give the topiary extra depth. You use a candle holder with a prong at the base to hold the foam in place and tie a ribbon around the bottom for extra decoration.
My criteria for DIY projects is can I (the queen of messing up DIY projects!) manage to pull it off. The hardest part of this one is cutting the foam and anchoring it (I told you, I'm a real butterfingers!), so as you can see, that shouldn't be too hard for even the DIY challenged like me! Give it a try. You don't have to experiment with roses for your trials. Also you can put the balls and holders together well in advance so you aren't overwhelmed closer to your wedding. Add a couple of candles or votives to the side for an extra accent and a variation in height. Enjoy this fun project!