Floating Flower Tip - Most flowers float pretty well on their own until they start to pool with water and slowly sink. For a longer lasting centerpiece, use bubble wrap to make little skirts for your flowers.
Rustic Star Decoration: Use recycled wood or scrap wood for the background. Paint of stain the wood. Put nails the the "star points," Then use ribbon or burlap to create the star. Add a ribbon at the top of the star