Making a photograph of a person look amazing adds an extra dimension of professionalism to your design. These photoshop body enhancement tutorials will help you transform your people pictures to stunning models in next to no time. Most techniques involve similar use of the photoshop tools.
I have not tried these, but a number look appropriate to consider for editing photos. Be careful of the sites you visit as always, not all material is suitable, and not all tutorials work, sometimes they assume you can fill in steps and they leave them out.