joker vibe drawing

now i am trying to make a much darker vibe in this drawing.
obviously, if you are trying to add darker vibe or lighting you add darker colors, but it is good practice to never use complete black for a drawing.
i learned that watching some youtube videos.
it is also true that you shouldn't add complete white not even for the bright highlights.
but i often do that, because that makes my drawing look much lighty and glowy