Guitar Signature Restoration

I need a skilled artist (London-Based ideally) to touch up/redo 3 faded black signatures on my guitar.

This guitar is not for resale, it is sentimental to me, however I have continued to play the guitar and the original signatures have faded. I want to get them redone/touched up so i can get a protective coat put on the guitar to keep using it.

Requirements:
- Precision and attention to detail
- Experience with fine-tip art tools
- Ability to match existing ink density

Ideal Skills:
- Artistry in re-tracing signatures
- Experience with similar projects
- Professionalism and reliability

Please provide samples of previous work and an estimated timeline.