First, you need to have a good understanding of the characters' features and poses. Then, start with simple sketches to outline the basic shapes. Pay attention to details like their costumes and expressions.
Definitely. The movie takes inspiration from the DC Comics character of the Joker and builds its story around it. It incorporates various elements and themes from the DC Comics lore related to the character.
Definitely. The movie takes inspiration and elements from the DC Comics version of The Sandman. It tries to bring the comic's story and characters to the big screen.