This page displays all the changes you personally have still sitting in draft mode. These changes need to be updated until you are happy with them and then changes to review state or deleted.
Click on the description link for thechange and you will be placed into edit mode for thechange, where you can add additional antries to the change implementation details section; or change the state of the change to preview or deleted.
Once you change them to review state they will be submitted for approval to the appropriate group. If on the other hand you delete the record, it is gone forever.