Hello :)
As a piano accompanist my role is to follow the soloist 'to the letter' in their interpretation of the song/music. Similarly, in creating backing tracks, my role is to support the soloist with the most suitable form of music, and I believe I do both of these very well. I work regularly in the accompanying field, and (amongst others) have also created a backing track to an original song that was a wedding gift! The customer was very happy. He performed his song with the track at the wedding and the couple were most impressed. I printed the sheet music for each of the instruments (6 plus percussion) also.
For your project I would use computer technology to produce the guitar sound of your choice (acoustic or electric), in the style that most suits the composition. The actual music is played on the keyboard, so will be a heart-felt live rendition which can then be edited. Necessary effects such as reverb, equalisation etc, are included.
If you would like to extend your budget beyond my original bid I can add any other instruments that you may like - drums, piano, strings etc (+20 for 3 extras). I can also sing the song, or have a male singer perform it ( +20). Backing vocals are another possibility ( +10).
If you are interested I'd love to hear from you to know more about your project and what I can bring to it. :)
PS: I'm new to Freelancer, so I may have filled things in wrong! lol!