Spraypaint branches silver and add glitter? Then maybe hang glitter pinecones and crystals from the branches, and make the bases look like snow. Then surround them with tealights set in aqua, clear, and mint glass marbles.
DIY elegant winter centerpiece: use salt or decorative sand in a clear vase. Add twigs or branches. For that sparkly look add glitter:) http://www.celebrations.com/usrimg/melissaklein-4618/Holiday-Decor-Tips-Winter_Sticks_and_Snow.jpg