I don't know what qualifications you will need but you will definitely need a showreel of previous work. You will need to show your competence using certain software packages and how creative you are. If you can show potential employers something they haven't seen before (I assume that's what you are referring to) then that puts you one step ahead of the thousands of others. You need to show ad's, tv work, movie work, 3d modelling and corporate work that you have done in order to get your foot in the door. Are you artistic, can you paint or draw, do you have a good eye for composition, do you understand light and shade?

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