This is a character I created a couple of years ago using a color palette that is understated and much different than what I would normally choose (bright and loud!)
For my first experiment, I made the color a little less subdued.
Already, I felt like this was a big improvement. Then I decided to go all out and completely change the color. The final image is a result of experimenting with color adjustments, overlays, and curves. I'm really happy with the finished piece.