Objects in contact with bodies are one of the reliable places where a drawing reveals how carefully it has been thought about. A prop drawn as a shape laid over skin sits on the surface of the picture; a prop drawn as an object with weight, material and attachment becomes part of the scene. The difference is a handful of decisions rather than a large amount of rendering.

This applies to everything from a bag strap to jewellery to anything more specific. The principles do not change with the object, which is useful, because it means the practice transfers rather than having to be learned separately for each new thing that appears in a picture.

Material behaviour comes first

Every material has a set of behaviours: how much it bends, whether it creases or stretches, how sharply it catches light, whether it holds a shape when unsupported. A drawing that gets these right reads as the material even at low detail; one that gets them wrong reads as generic regardless of how carefully the surface is rendered.

The most common error is drawing everything with the same rigidity. Leather, silicone, metal and fabric behave completely differently under the same load, and a single default behaviour applied to all of them is exactly the flattening described in the piece on how fabric describes a body.

Attachment must be visible

Wherever an object is held in place, the mechanism should be drawn. Straps, buckles, elastic, friction against a surface, or simply a hand. A prop that stays in position with no visible reason is one of those details that readers do not consciously question and do register as wrong, which produces a general impression of carelessness.

Attachment also has consequences. A strap under tension deforms whatever it crosses, sits into soft tissue, and changes direction slightly where it passes an edge. Drawing those consequences takes seconds and it is the difference between an object placed on a body and an object worn by one.

Deformation goes both ways, unevenly

When a rigid object presses into skin, the skin gives and the object does not. When a soft object presses against skin, both give, in proportion to their relative softness. Getting this ratio right is what tells a reader what something is made of, often more clearly than colour or texture does.

The contact principles are the same as those between two bodies, covered in the piece on drawing two bodies in contact, with the addition that a prop's rigidity is a property the artist chooses and must then apply consistently across every panel it appears in.

Light ties a prop into the scene

Objects that do not share the scene's lighting read as pasted in. That means matching the direction and colour of light, giving the object a cast shadow, and letting it pick up bounce from nearby surfaces. Highly reflective materials additionally show a compressed version of their surroundings, which is a strong cue for both material and placement.

Specular behaviour is the fastest material tell available. A tight bright highlight reads as hard and polished; a broad soft one reads as matte or slightly rough. Getting the highlight shape right does more work than getting the base colour right, which is worth knowing when time is short.

Scale and perspective errors are obvious

Objects have known sizes, and readers check them unconsciously against the bodies nearby. A prop drawn slightly too large or in a perspective inconsistent with the figure it touches is one of the most visible errors available, because it has a reference point right next to it.

Constructing the object in the same perspective as the figure, rather than drawing it flat and rotating it by eye, prevents almost all of this. It is the same constructive argument that runs through the piece on what improves figure drawing.

Making an object belong in the picture

Decide the material and its behaviour, draw the attachment, get the deformation ratio right, match the lighting, add a cast shadow, and construct it in the scene's perspective. Six steps, all cheap, and together they convert a shape laid over a drawing into an object inside it.

Characters here are fictional and unmistakably adult, and props are treated as ordinary objects with ordinary drawing requirements, as described in our editorial principles.