Enhance PMU Consultation Preview App

I created a PMU consultation preview app prototype using Base44 and I am looking for a developer/designer to help improve and professionalize the app experience.

The app allows PMU artists to:
- upload a client photo
- preview brows, lip blush, and eyeliner
- move, resize, rotate, and customize overlays
- simulate realistic PMU results before treatment

Current status:
- the concept and UI already exist
- I have a working prototype
- I need improvements to realism, editing controls, and overall user experience

Main improvements needed:
- realistic eyebrow overlays with natural hair stroke texture
- realistic nano brows, combo brows, and powder brows
- realistic lip blush blending with natural lip texture and border
- realistic eyeliner simulation and lash enhancement
- smooth blending into skin and existing features
- realistic healed PMU appearance
- smoother drag/resize/rotate controls
- better overlay transparency and feathering
- remove editing artifact lines and transform box traces
- cleaner transform/edit UI
- symmetry guides and face mapping
- AI-assisted face analysis and PMU recommendations
- mobile-friendly editing experience
- luxury beauty app aesthetic

This is NOT a full app from zero.
I already have the structure and concept built.

I am looking for someone experienced with:
- photo editing interfaces
- image overlays/canvas editing
- beauty or face editing apps
- FlutterFlow, Bubble, React, or mobile app UI
- AI image rendering or facial mapping is a plus

Please send:
- examples of similar work
- recommended platform/approach
- estimated budget
- estimated timeline