How often do you look closely at how you are playing gypsy jazz guitar? Whenever I learn a new guitar technique I look very closely to see that I have got it right before I start regular practice, because regular practice programmes in the technique – bad technique gets programmed in just as easily as good. Gypsy jazz guitar has a number of fundamental techniques which have to be programmed in absolutely correctly otherwise huge problems emerge later when you try to use them at fast tempos or for a whole gig. The plectrum rest stroke (of which more soon) and the loose wrist (not arm) action for rhythm guitar are quite difficult to learn intially and there is considerable scope for error. Sometimes I play in front of a large mirror to check my technique but recently I have been using a video camera which is more useful because you can look at the replayed images with full concentration. I mounted the camera on a tripod and turned the viewing screen round so it was facing me, it was easy to set up and use.
I learnt a lot from looking at a few minutes of clips – I still move my forearm more than I should when playing rhythm guitar but this only happens at high tempos, I angle my plectrum correctly for rest strokes on the upper strings but don’t have enough angle on the lower strings (which is a counterintuitive finding) – all things that I can easily correct before I do more practice but which I wouldn’t have otherwise noticed. I recommend a session of video feedback every couple of months to check for creeping bad habits – but I won’t be posting mine on YouTube!