Filming guitar instructional videos. Currently have a RODE NTG-1 mic positioned above and in front of the teacher. Problem is that the mic not only picks up the teacher's voice, but also the sound coming out of the monitor speakers, as well as that annoying pick snapping against the strings sound that makes the guitar sound thin and tinny on the video.

I've recorded acoustic guitar several times, I usually use a single condenser, or two pencil condensers x/y'd. But this time I'm trying to record a tune without a pick, I'm sorta just getting tone and squeeks from the fingers. if any of you guys have experience with recording soft mellow fingerpicking acoustic please share.

I'm aiming towards a sound like this: