Instructions
Load the "Online Axxcess" menu from within the game. Scroll down to the "Community Creations" menu. Find the creation that you downloaded and write down the user name. Do this for every creation you want to edit.
Go to the "CAWs" website and load the "SVR 2010" section. Click on the "Search" link.
Type the Xbox Live user name into the "Search by Creator" box and press "Search." A list of created wrestlers will load. Click on the wrestler name you want to alter.
Open the "Create-A-Wrestler" menu in the "WWE Smackdown! vs. Raw 2010" game. Use the attributes listed on the CAWs website to recreate the wrestler.
Change the sections you want to edit once the creation is complete. Save the wrestler to your Xbox. Now the creation is saved and you can edit the creation at any time.