I need to update my cover.

[Banjomike]

The easiest way is to create an alternate cover edition which is basically a duplicate of the book record that is already on Goodreads but wthout the ISBN/ASIN. The two records can then be combined and the new one made the default which people will see on searches etc.

http://www.goodreads.com/librarian_ma...

[Monique]

You've done it correctly. I think what you may be looking for is making your new cover edition the default. The procedure for that is here:

http://www.goodreads.com/help/show/31...