I actually already like the piece as it is!
If you want to rework it, you could spend some more time on rendering a few details. Some more surface texture on the wings would be interesting. The fabric folds of the background figure could form a more dramatic shape. I could also imagine that a few skipe on the foreground character'S costume might enhance his silhouette. I'm not sure if it would give the image more impact to zoom in a bit more on the foreground character?
Just a few things to nitpick on, and I'm not even sure if they work