The bone tool with a tip is ideal for creating fine veins and dents on petals and leaves. The flat tip is ideal for lengthening lines on petals, and also add shapes in relief at the same time. You an also use it to press edges of clothes from covering and modelling pastes and create the effects of folded cloth. Or with the sharp bone tool you can create folds on clothes around armpits. The sharp ended bone tool can also be used for creating other details, such as wood structures, imitations of grass, features on characters' faces, hairs on animals, leaves on palms and others.