To transfer a design onto the wooden surface, start by sanding the wood to create a smooth, even surface. Next, sketch your design onto the wood using a pencil. You can use a template or ruler to help keep your lines straight and even. Once you are happy with your design, use a wood burning tool to burn the lines into the wood. Start with the outermost lines and work your way inward. Once you have burned the entire design, use sandpaper to smooth any rough edges or uneven surfaces.