The 1 Biggest Mistake Actors Make During Auditions - It Might Surprise You YouTube Video. The most common mistake actors make during auditions is to memorize their lines and repeat them back to the reader. During this video, you will learn the most common audition mistake and how to avoid it. Share some of your audition tips in the comment section of the channel, so we can all learn and help each other.  Don't forget to subscribe and click the notification bell so you always know when a new video has been uploaded.   LEARN HOW TO HAVE MORE SUCCESS Book the Job Video Series is available to you now. Visit your profile page on 800Casting and click on the Online Courses at the bottom.  This course will give you access to 13 videos that everyone interested in having success as an actor or commercial model needs to watch. And they were created by Aaron Marcus. 800Casting sponsored the series which is why it is affordable to everyone. Order it today.