The most important issues when preparing for a photo shoot are:

Physical Preparation

Cutting weight
Getting sleep and avoiding anything that makes your face look tired
Getting tan
Visiting a pro hair stylist (on day of your shoot and weeks prior)
Cleaning up your personal care (yes, some guys show up with long fingernails or huge ass toenails.)

Read a complete checklist of how to get ready before your shoot.

Attitude Preparation

Adopting a Big City Attitude makes you look good.

At the Shoot..

Photo Crew gets the Model Ready on the day of the photo shoot