Decide what you want
Before you start to find actors to work in your commercial, you need to decide what kind of a face or an actor you are looking for. For example, in baby food or cereal advertisements, you would be requiring a woman with an innocent face and a motherly look. For a beauty product commercial, you would need a naturally beautiful girl with gorgeous features.
Contact modelling agencies
There are multiple modelling agencies in almost all major cities throughout the world. You can contact a local modelling agency and look for different faces. You may conduct auditions of different models to see if you can find the desired qualities of an actor.
Watch current trends
In order to choose actors for your upcoming commercial, you have to keep yourself updated about the modern trends and what the audience wants to see. Chances are high that you would be able to find actors of your choice who are already in the field. Therefore, watching current advertisements being run on television, you can get a better idea of the performance or the success rate of the actors. You will also want to do some marketing research to understand the demographics of your potential customers that you will be targeting your media campaign towards.
Do not be hesitant in trying a new face
Some traditional directors or producers are always reluctant to try new faces, sticking with the tried and tested actors. However, if you are willing to take a risk, you should go ahead with a new actor who possesses the qualities you are looking for. There is a huge possibility that a new face gains more attention as compared to someone who has been in the industry for a long time.