How can I effectively prune a maple tree to promote healthy growth and maintain its shape?

To effectively prune a maple tree for healthy growth and shape maintenance, start by removing dead or diseased branches. Next, prune any crossing or rubbing branches to prevent damage. Trim back any overly long branches to encourage new growth. Avoid cutting more than 25 of the tree's canopy in one season to prevent stress. Prune during the tree's dormant season for best results.