Watch these tutorials to see how junk and paper are transformed into Studio Ghibli magic:

Thin paperboard strips (from cereal boxes) are used to blend different container shapes together, creating a seamless, organic look for the castle's hull.

that capture the Ghibli aesthetic in a small, precise scale without requiring paint.

Cardboard serves as temporary supports and caps for turrets. To create the "cottage-core" aesthetic, shingles for the houses on the castle's back are often hand-cut from old cereal boxes using pattern-edged scissors.

If you prefer working exclusively with paper rather than "junk," there are several ways to build the castle: Sankei offers laser-cut Miniatuart Kits

In junk modeling projects like this, paper-based materials provide the flexibility needed for intricate textures: