I enjoyed the listen, flaws and alls.
I think there are two goals for capturing an acoustic. The first is when it is solo like this and the second is when it will sit in a mix.
For something like this, where the guitar is is nekkid, it takes a lot of time, experimenting and patience to get a good tone. New strings go along way for starters. Then mic patterns, then mic placement. Once you get all that done, don't be afriad to EQ like crazy. Mics hear something different than ears. Keep on experimenting and trying to work it out. To me, it's one of those holy grail things.
I also agree with MJB about the use of reverb. Keep the vox and guit in the same space.
I have never posted any solo guitar/vocal stuff like this song because I have never been happy with my guitar tone.