WooCommerce already comes with everything you need to upload and sell your own products. You will still need to take time to optimize your website for more sales. The WooCommerce Checkout Upsell Funnel Plugin can help. It offers product suggestions with discounts to encourage your customers to buy more from you.
This plugin suggests more products to your customers as they attempt to complete their order. You can display products on the checkout page, in a pop up, or can simply redirect customers to a new page. You can also customize your sales funnel and apply custom CSS rules.
The WooCommerce Checkout Upsell Funnel extension supports product, cart, and customer conditions. It lets you create as many order bumps you need. villatheme is the developer behind this plugin.