Chely. I have 3 years of experience as a business owner and internet marketing.
To spread the word on your site, how about collaborating with relevant businesses online.
You can host reciprocal links, articles about each other, promote each others events, and maybe even sponsor an event together. I have successfully used all of these actions to promote various websites.

Also can you offer a free modeling class or something useful that would help you stand out from other modeling agencies?

Can you have a page on your site with articles such as "So you want to Model?", "The Ins and Outs of Professional Modeling.", "Tips for your first Photo shoot" or anything of use in the modeling world.

Best of Luck
Leah Oviedo
http:stylinsites.com