A well-done rhinoplasty is usually undetectable, which is exactly the point. The noses people identify as surgical are almost always ones that were over-reduced.
Common giveaways include a pinched or overly narrow tip, a scooped or ski-slope dorsum, a tip rotated too far upward so nostrils show, visible bossae or bumps in the tip cartilage, a polly beak fullness just above the tip, and a nose that looks too small for the person’s face or heritage.
Modern structural and preservation rhinoplasty techniques aim to keep natural contours, including a soft dorsal line rather than a hollow one. The current standard in Vancouver clinics is a nose that looks like it always belonged on that face, not a replaced one.