Simplify the following text for a Grade 9 native English-speaking person.
Original: Aeschylus is also said to have made the costumes more elaborate and dramatic , and having his actors wear platform boots ( cothurni ) to make them more visible to the audience .
Simplified: Aeschylus also added more details to the costumes , and had his actors wear platform boots , called cothurni , to help the audience see them better .