Thank you for your comments @daceronine @patrycja.lerch !!
In retrospect, regarding my flower and flying illustration, the flower's color does take too much attention away from my character due to its saturation, so I should be more careful about that.
Here is my composition focused on variety. To be honest, I was at a loss how to add variety since my character has some stripes and circle motifs already. So I try to add in some background elements that hopefully aren't too distracting. I also try to see what kind of effects I can utilize from Clip Studio, making me realize that there's a hundred of other tools that' I've neglected for a long time lol.
