One of the best tutorials I saw on micing had recordings of several different guitar mic positions. Since I couldn’t find it again to give credit I will attempt to reproduce it here.

Mics at 90 degrees halfway between the sound hole and the 12th fret.

mics about 8-10 inches off bridge and 12th fret.

One mic about 6″ above the 12th fret pointing down, the other about 15″ from the sound hole.