To Upgrade your membership, first sign in to the fan club and visit the "Account" section located at the top right hand corner of the website.
Scroll down to the "Upgrade/Renew" section and select "More Info" under the Upgrade option.
Once directed to the next page you will need to select "Join/Renew" under the membership package you wish to upgrade to. Then continue to follow the instructions to complete the upgrade process.