You may use any kind of wood that doesn't easily splinter when cut. Pine and MDF cut easily and are great for beginners. If you are using plywood, use high quality plywood. Roughly cut around the outside of your pattern leaving about 1/2 or so. Cut a piece of wood to fit the pattern. Cover top of the wood with packing tape. Spray the back of the pattern with spray adhesive and press very firmly. Cut the outside of the pattern first and then the inside. Take your time and let the saw do the cutting. These small blades to have the ability to do the sharp curves if you are patient..
