Drawing crime noir comics requires a good understanding of the genre. Look at examples from masters, practice sketching urban scenes with a sinister feel. And don't forget about the clothing and accessories of the characters - they should enhance the noir atmosphere.
Well, start by studying the style of classic crime noir works. Pay attention to the use of shadows and stark contrasts. Also, focus on creating moody and gritty characters.
To draw crime noir comics well, you need to master the art of lighting. Dark alleys, dimly lit rooms - these set the tone. And the characters should have sharp, defined features that show toughness. Also, the storylines often have a lot of mystery and tension, so try to convey that through your visuals.