I have been a fingerstyle guitar player for the last 40 years and I'm trying to learn plectrum style. I have a Gitane, I've got the Gypsy Picking book, and I have the Wegens. I've been learning the swing chord forms for the last couple of years and I have been learning some basic Django repertoire, mostly fingerstlye arrangements, but I am taking the plunge and learning proper picking. I am a classical player and understand rest strokes, but the angle and motion of upstrokes has me puzzled. If you angle the pick to strike upstrokes at a 45 degree angle away from the sound hole pointing down, it seems this would be a lot of wrist action, especially in tremelo. I am a newbie and this might seem uninformed, but that is my question. Thanks.