In modeling auditions, the way you look is extremely important, especially when auditioning for commercials, because you'll be considered a salesperson for a product. Casting models is very precise. To get a good view, they'll probably ask you to pose for a front and side profile. When auditioning for a speaking role in a TV commercial, you read from cue cards, large flash cards that have lines printed on them in big letters.
When models audition for a role in a movie, TV show, they may require you to read from a script. Keep the following in mind when auditioning: You may receive your copy of the script moments before your audition. Ask for a little time to study the role. (Don't take too much time.) It's ok to read directly from the script while acting. Remember that even though a modeling audition may be for print or non-speaking roles, your ability to articulate is just as important as your ability to look good.
If they are auditioning for models who will be playing a "role", the important thing while auditioning is for them to see how well you interpret the part, not how well you can memorize a script on short notice. Modeling auditions are competitive, so concentrate, focus, and calmly say the words of the script correctly. If you mispronounce a word or two, don't worry. If you completely mess up your lines, you can ask to start from the beginning again. More than anything - have fun, and smile!