In Proko's video on lines he pointed out that when drawing you should not put a line down before imagining or visualizing what you will draw. I've drawn frequently since 12 years old, and I had never considered or practiced this. I have always drawn what I see or want without thinking, oftentimes needing to erase or redo. I can faintly see what I want to draw, but I can't actually visualize it ON the paper or in front of me.. Since Proko has pointed this out I have become conscious of the difficulty I have for visualizing what I want to draw, and it definitely keeps me from full potential in my sketches. Is there anything I can do to combat this?