Using your unfinished wood hummingbird shape is a breeze. First, peel off the protective paper backing. This backing is there to keep the wood safe during laser cutting and shipping. If you need a hole in the shape, let the seller know the size and location, and they'll add it for free. You can use these shapes for all sorts of DIY projects in your garden to attract wildlife. As for sizes, you can choose from 3 inches up to 36 inches. The wood is sanded natural wood with slightly burned edges from cutting. It's cut from cabinet - grade Baltic birch plywood in 1/8 (3mm), 1/4 (6mm), or 1/2 (12mm) inch thickness. If you need a different thickness, just message the seller. To maintain your wood craft, keep it in a dry place when not in use. Avoid exposing it to extreme weather conditions for long periods. This will help the wood last longer and keep its natural beauty.