You can update your shipping address at any time in your account.
To update your shipping address
Step 1: Login to your account
Step 2: To the right of your address click on the "Edit" button
Step 3: Update your shipping address (you can also update your billing address if you'd like)
Step 4: Scroll to the bottom of the page and select "Save" when finished
Please note - this will update the shipping address for all future orders and not for orders that were just processed.