How do they make people look like slenderman?

To create the appearance of Slenderman, filmmakers and artists often use a combination of visual effects and practical techniques. This includes the use of tall, slender costumes to exaggerate height and thinness, as well as makeup or digital effects to create a pale, featureless face. Camera angles and lighting are also manipulated to enhance the eerie, unsettling presence associated with the character. Additionally, post-production effects can be added to create a more supernatural or ghostly appearance.