Looking for work as an actor is a difficult job and there are so many of us out there that competition is rife. You need to ensure that you have a good portfolio and that you volunteer to do absolutely anything to get you onto the network as this is all about networking and who you know. Casting directors often remember people who have been around for each and every audition or being on set and they will eventually get to know you. If you need more experience then join a play company that does theatre on a regular basis.