First of all, with regard to some audio and video files in Beowulf, the story about dragons can reflect the understanding of dragons in British culture, and you can search for relevant pictures, such as clips from the movie Beowulf.
The next part is about Homer's epic, which is based on many myths and legends of ancient Greece and Rome, and of course, the movie "Troy Slaughter". We can choose the allusions of mythical characters as the key points to explain, and explain their stories and their application in English learning today. For example, Helen as a femme fatale, its metaphorical meaning and so on.
Then you can choose some Shakespeare's plays and Milton's description of Satan in Paradise Lost.
When making courseware, you can combine sounds, images and words to explain, which not only increases the interest, but also helps students remember and understand through the connection between images and words.
Finally, I wish you a successful trial! I hope these are helpful to you.