Common mistakes when baking displacement for 3D models usually include using low-resolution maps, improper cage mesh setup, neglecting edge loop density, and skipping pre-bake previews.
Low-res maps fail to capture fine details like cracks or fabric texture; an ill-fitting cage (used to align high and low-poly models) causes stretching or artifacts; too few edge loops lead to jagged, unnatural surfaces when displaced; not previewing means you might miss errors until after baking.
If you’re new, start with a simple test model (e.g., a subdivided sphere with a basic bump) to practice cage alignment and resolution—this avoids wasting time on complex projects early on.