To draw a brain, start with a simple overall shape, then build up the folds with layered curved lines so it looks wrinkled and three‑dimensional. Using light sketching first and then darkening key lines and shadows at the end makes the drawing cleaner and more realistic.

Basic brain outline

First, focus on getting the big shape right before worrying about details. Think of the brain as a rounded, slightly lopsided blob that is narrower at the bottom.

  • Lightly sketch an oval or “bean” shape, a bit wider at the top and slightly indented in the middle to suggest two hemispheres.
  • Add three small bumps or curves at the lower back edge to hint at the cerebellum and lower brain area.
  • Keep your pencil pressure soft so you can erase or adjust the silhouette easily.

Adding the folds (gyri)

The wrinkled surface is what makes a brain instantly recognizable. These folds are basically many small, connected curves.

  • Divide the inside of your outline into loose “zones” or compartments with faint guidelines; this helps organize where your folds go.
  • Fill each zone with irregular squiggly or scalloped lines that loop and branch, avoiding perfect patterns so it looks organic.
  • Vary the size of the curves (some long, some short) to avoid a repetitive look and to suggest depth.

Brain stem and cerebellum

Adding the brain stem and cerebellum makes your drawing feel more anatomical, even in a simplified style.

  • From the lower middle of the brain, sketch a short “stem” using small stacked rectangles or a tube shape that narrows slightly as it goes down.
  • At the back lower part, draw a smaller rounded mass (the cerebellum) and texture it with tighter, curved lines that are closer together than on the rest of the brain.

Shading and finishing touches

Shading will give your brain volume and make the folds pop. This is where the drawing starts to look three‑dimensional.

  • Decide where your light source is (for example, top left) and lightly shade the opposite sides of the folds and the underside of the brain and stem.
  • Darken the main outline and some of the deeper grooves between folds to increase contrast, then blend or soften the shading if you want a smoother look.
  • Add a light mid‑tone over large areas, leaving the tops of folds a bit lighter to suggest highlights.

Fun variations

You can adapt the same structure for different purposes—cute, cartoony, or more realistic.

  • For a cartoon brain, exaggerate the roundness, use bold outer lines, fewer but thicker squiggles, and optional eyes or a face for a character look.
  • For a more anatomical sketch, use thinner lines, more intricate folds, and clearer separation of lobes and the cerebellum, keeping the overall shape slightly more elongated.
  • For notes or bullet journals, simplify to a cloud‑like outline with a few well‑placed squiggles and a short stem so it’s quick to repeat.

TL;DR: Start with a bean‑like outline, sketch a short stem and small lower “lobe,” then fill the brain with varied squiggly folds and finish with soft shading and darker grooves for depth.

Information gathered from public forums or data available on the internet and portrayed here.