I might do a painting like this, but rather than painting a streak with a person. I'd paint a streak of emotions, or possibly things that have triggered sever emotions in my past. The paintbrush painting this caught my eye.
Sketch by Andrea Joseph. Whichever theme you choose - remember that you can DRAW really well - it takes time, it's hard but it gets you marks and it helps you PROGRESS. Why not commit to ONE DRAWING EVERY DAY for the first week or two?