Suggestions for improving my cartoon drawing?

I have always struggled with “simple” drawing. I have a knack for sketching and realism, but when it comes to drawing something cartoonish or simplified, everything falls flat. My stick figures look like your average, generic stick figure. No character, no details of interest… they are boring and uninspired. Trying to add my own “flare” just makes them look ridiculous. I know that practice is a big factor in this, but I’m not getting anywhere on my own, I could use some tips.