Using your unfinished wood cupcake shape is easy. First, peel off the protective paper backing. Then, you can paint it, add decorations, or use it as it is in your craft project. If you've asked for a hole, it'll already be there as per your instructions. As for maintenance, keep it away from excessive moisture to prevent warping. You can give it a light sanding if it gets a bit rough over time. And remember, if you need any help with your project or have more questions, just message the seller.