Check out the references below for some great advice about how to prepare for portfolio reviews:
Here is a comprehensive article by Mary Virginia Swanson about preparing for portfolio reviews, put out by the Griffin Museum.
Here’s a Portfolio Review Guide, put together by the wonderful photolucida folks, which offers tips from fellow photographers on how to make the most of your review experience.
Here is a Mary Virginia Swanson an interview about portfolio reviews.
Also, The New Orleans Photo Alliance will host a portfolio review preparation mini-workshop in the fall (late Sept or early Oct), which will be free to all members.