Work experience is not the only thing you need when you want a spot on television, the theater or the movies. You also have to know how to write a resume and get a few good headshots because what directors see on paper is also what they consider after you perform your monologue.
You should have someone review it and make changes if necessary. Some people make the mistake of writing one that fits a theater or television feature rather than for a commercial or a film so you should make different versions and use them at the right time.
If you are not ready to go for an audition, try finding work as a member of the crew. This will give you the opportunity to get to know everyone because most veterans are more than willing to help newcomers.
This will make it easy for you to audition later on when you have built a relationship with the casting director since you are not a picture or a piece of paper but someone they already know.
There is no guarantee that you will get the part whenever you go to an audition even if you have attended acting classes and worked on other projects in the past. The only thing you can do is prepare for it when there is one coming up.