A good example of a well designed and executed selection of badges that clients are meant to embed on their personal websites to link back to their 'profile' on a given site can be found on houzz.com (I've attached a screenshot of their badge offerings to this contest listing).
We've taken a stab at a handful of different badge designs in the past, but none of them were good enough to serious consider. (I've attached a screenshot of those failed attempts for your reference here as well).
The badges that you come up with will of course need to incorporate our existing branding (the source files for our logo are included as well).
Just like some of the Houzz.com badges I've attached have wording that says 'featured on houzz', some of the badge designs you deliver for us should have wording that says "Reviewers' Choice".