Examine the piece thoroughly. Often the customer knows what needs to be done, but since you know more about jewelry, you might know of a better way to fix something or even a more aesthetic way.
If you charge for your service, keep track of the time you spend. Sometimes a repair may seem simple, but then it turns into an involved ordeal.
Return the piece so it looks almost new. A professional jeweler polishes all pieces that they fix. This is a very nice touch. It really doesnt take that much extra time and will make your customer happy.

