Most of the actors of today struggle with making their character really authentic. It is better to follow the passion for presenting different characters, rather than working on achieving your career goals. Once you see a successful actor, it is always better to understand their beginning and of course the struggles they won can be set as your strong motivation. Anyhow it is rare to see winners, who have never gone through mistakes. So let us see what the common mistakes are made generally:
a) Some of the actors claim that they have never felt stage fright. May be if someone is saying, that can be an inadequate statement. So believe everyone have stage fright, rather than avoiding it find out a gradual technique for finding a way out of it. Some of the best ways for overcoming the stage fright includes practicing the dialogues much perfectly, trying to accept the crowd as a usual part of your art presentation etc. Even the experienced actors have gone through the fear for the audience, but they developed tools for overcoming it and that attitude made them the winner. S
b) Never avoid the audience who are in front of you. Some of the beginners in the industry try to perform as if there are no audiences in their front. They try to make themselves believe that they have only the co –actors to interact with and thus completing forgetting the audience. But that is not at all a better way and rather it is considered as way being out of the track. It is always better to consider the audience as the co-stars and so thus make yourself confident about your performance. Make sure that like your co-star, the audience does have the right to understand the things that are really going on in the stage. Usually good directors have special techniques that can help you out of such situations. Along with those acting classes New York City is the best resources that can offer you help over such things.
c) For some performing means simple working on the expression. But really volume and diction need to be improved for better presentation. When you are performing for films or serials, may be you have the choice of body mimic. But that may not be the case with real stage shows. In that cases the performer need to work on both their expressions as well as the sound. So never try to devalue the volume and diction, in the real stage shows.
d) Another thing is focusing too much on the dialogue delivery, forgetting about the instruments played on the situation. That kind of act can make your performance robotic and so there is no chance of improvement can be expected. So try to take things much naturally, with greater confidence over your performance.
Anyhow a lot of shortcomings can be improved with professional guidance or acting classes. One of the most appreciated acting classes from Sheila Gray is a real supporting resource for many aspiring classes.