I'm OKAY with the guitar part...I'd have mixed it a little lower though so that it could be heard to be the balance of whatever is playing on the other side (can't be sure because the flute & guitar dominate).
After the guitar drops out the left side seems a little empty.
I've found that BIAB realTrack cello really cuts through a mix and thus can carry a melody to the listener if it's given a little guitar overdrive through a VST.


Cheers
rayc
"What's so funny about peace, love & understanding?" - N.Lowe