What are the common mistakes when paint opacity 3D models?

Common mistakes when painting opacity on 3D models include not testing gradual opacity transitions, ignoring layer stacking order, overusing full transparency, and neglecting how lighting interacts with translucent areas. Not testing gradients often leads to harsh edges instead of the smooth blends needed for materials like glass or fabric. Ignoring layer order can make opaque layers accidentally cover translucent ones, ruining the intended effect. Overusing full transparency (100% see-through) can wash out details or make parts look unrealistic. Neglecting lighting means translucent areas (e.g., skin, plastic) won’t show depth, as opacity relies on light to highlight subtle thickness or texture. If you’re new to opacity painting, start with small, simple parts (like a model’s lace trim or plastic screen) and preview in your project’s final lighting setup—this helps catch issues before they affect the whole model.