React 3D Glasses Try-On Plugin

I need a lightweight, browser-based virtual try-on plugin that drops straight into my website like
https://demo.neox-lab.com
Visitors should be able to grant camera access, have their face detected in real-time, and see any of our frames—supplied as GLTF/GLB models—rendered accurately on their face. Smooth performance on both desktop and mobile is a must, with natural motion tracking that keeps the glasses locked to key facial points as users turn or tilt their head.

Key points
• Assets: GLTF/GLB models only; the script should load multiple variants on demand
• Tech stack you choose can include Three.js, WebGL, WebXR, TensorFlow.js or similar face-tracking libraries, provided everything stays client-side and privacy-friendly
• Styling hooks: expose simple props or CSS classes so I can match the look and feel of the rest of the site
• Bundle size matters—please tree-shake and lazy-load where possible

Deliverables
1. Reusable components that mounts the camera feed, handles face tracking, and overlays selected GLTF/GLB model
2. Configuration file or props interface to swap frame models, adjust scale offsets, and fine-tune positioning
3. Clear setup instructions plus a short demo page showing the component in action
4. Commented source code pushed to my private Git repo

Acceptance criteria
• Initialisation time under 2 seconds on a mid-range mobile device
• Tracking remains stable within ±5° head rotation without visible drift
• Component passes basic accessibility checks (keyboard focus management, ARIA labels for controls)
• All code lint-clean and builds in a standard Create React App or Vite environment

Let me know your proposed approach, any relevant past work, and an estimated timeline so we can get this feature live quickly.