misproportion

Misproportion means to proportion badly or incorrectly, resulting in parts that don't relate properly to one another or to the whole.

The term applies to visual arts, architecture, writing, and any domain where balance between elements matters.

The amateur sculptor misproportioned the figure's limbs, giving it an awkward appearance.

As a noun, misproportion refers to the faulty relationship itself: The misproportion between the tiny windows and massive façade made the building look strange.