These hands by polymer doll artist Diane Keeler require a scale and level of detail unfamiliar to most polymer jewelry folks. (The hands are from a class Diane teaches.)
There’s no cane work pattern or rough texture to camouflage flaws. Many polymer doll makers have been elected into NIADA and their sculptures are highly prized.
For an education in polymer dolls, look at the work of Diane Keeler, Jodi and Richard Creager, Kate Church, Annie Wahl, and others in this very specialized branch of 3D polymer.