Using these unfinished wood hen chicken shapes for your crafts is a breeze. First, peel off the protective paper backing before you start working on them. You can customize the shape by asking us to add a hole in the size and location you want. The shapes come in sizes from 3' to 24' and are made of cabinet - grade Baltic birch plywood in 1/8 (3mm), 1/4 (6mm), or 1/2 (12mm) inch thickness. You can use them for all sorts of DIY farm - animal - themed projects. As for maintenance, keep them in a dry place to prevent warping or damage. If you have any issues or need more guidance, just message the seller, and we'll help you out.