After you become a backer at your chosen level, you can manage your pledge. Under "You're a Backer", you will see a blue "Manage" button. Click on the blue "Manage" button, and then click on the blue "Change your pledge" button in the bottom right hand corner. You will then have the ability to manually increase the dollar amount of your total "Pledge Amount". You can now manually increase the dollar amount for your total pledge with the cost for the Add-Ons that you would like to add. So for example, if you wanted to add a playmat ($25) and a set of Star Realms Year One Promo Cards ($10), you would increase your pledge amount by $35. Then click "Continue" and then click "Confirm" and you should see a "You Did It" confirmation page. After the campaign ends, you will receive an email with Pledge Manager information on how to specify which items you ordered with your additional pledge dollars.