Heya~! So I'm a novelist that's writing my novel with a bunch of artists friends who help me draw my characters (I really appreciate them so much!), this is one of the art (The cover art) of the book, made by one of them.
So let's start off with the MC, in the story, we have three MCs (And a few more, however I won't get to that part since it is a spoiler), the guy on the left, Eric, the middle, Ryan and the right, Sarah.
The representation of this cover art, is that the three are in battle mode holding their weapons. They have each their own expressions to indicate their seriousness/takings of said battle. Who or may I said 'what' are they fighting against? Find out in the story :3
The characters expression indicates their stance of the battle, with Eric being excited, while Ryan and Sarah being serious.
As for the backdrop, it was a simple one, the backdrop shows glass shattering as the three characters headed in for battle. There's a reason why the colour of the glass is purple, to break through the facade of corruption thus 'breaking the glass'.
Besides that, that is it. Overall I wanted to show my characters through the cover, showing that they are fighting against the forces of evil, 'corruption'.