Mixing & Mastering for Acoustic Song

I have an acoustic song, just vocals and guitar, that needs professional mixing and mastering. The song is 3 to 5 minutes long and has a melancholic vibe.

Ideal Skills:
- Proficient in audio engineering, specifically mixing and mastering.
- Experience with acoustic music.
- Ability to enhance a melancholic mood through sound.

Please provide samples of your previous work in your bid.