1.Go to the Project Page and press the Manage Your Pledge Button. If you have not pledged yet it will say Back this Project.
2.Increase your pledge in the Pledge Amount box by the total of the add-ons you want to add.
3.Do not change the tier you are currently pledged at, unless you also want to change it while you are on this screen. You will then need to add the total of your add-ons onto the amount of the new tier you chose.
4.After the end of the Kickstarter campaign you will receive a survey that will ask you questions so that you can explain how you would like the add-on money assigned.
5.For 'add on' price detail, please read the 'add on price list'.