Adding customization options to a WooCommerce product isn't difficult, but you'll need to get the WooCommerce product designer plugin to do it.

The WooCommerce product designer plugin is a powerful yet user-friendly WordPress plugin that gives you the tools you need to let customers create products. Customers could, for example, add printed messages to T-shirts, edit the lettering on coffee cups, or upload photographs to be printed on products using this system.