So I am trying, and since this superhero is a speedster I have focused more on some legs. I am definitely more used to drawing more anatomically correct, and I am really trying to push myself into drawing more stylized. I have some more training to do, but I feel like this course is taking me in the right direction!
This is where I am trying to figure out the body type. Slim upper body and legs taking more of the focus.

The red sketch is my first try, second sketch (blue) I try to push it a bit more, and lastly, the big sketch is the one I chose to run with. I also tried to remember the straight vs. curvy lines, and big vs. small, with focus on the big legs! I did way more sketching for the outfit as well. I really tried to keep in mind, that I can just keep on trying, and that I don't have to rely on the first sketch.

The finished piece. I love doing linework, and I gave her a dimple.