There are a couple ways to distribute rewards on Patreon. You can either post them to your creator page or send messages via your patron manager.
We recommend posting rewards using your creator page, as it's an easy way to upload/attach media and share it with your patrons. You can share URLs, images, attachments and then select the privacy by choosing which reward tiers will have access to your creator posts. Be sure to label creator posts as a reward so your patrons will know!