I quite like the design for this character, with all the lightning motifs and the repeated pattern of circles like the headphone speakers on the gloves. My advice to you for future drawings is to look at similar cartoon styles to that which you are trying to emulate and practice drawing them. That way, you'll likely catch some of the nuances of how to make things look more aesthetically pleasing with regards to style. Also, for some things, such as the cape and hair, it would likely be useful to draw them with freehand lines rather than geometric shapes, so as to appear more realistic. Don't let this discourage you! Keep practicing and drawing, and someone might scout you! (I'd love to see you keep drawing this character over time. She will look amazing after some practice!)