-
I’ve been playing on and off for 35 years and my index finger still muted the “a” string. But that note does not add a whole lot of flavor yo the open g chord tone. So, try to keep your palm away from the back of the neck. Your thumb should be just hanging on to the top of the finger board your just touching the edge of it. You can even move your thumb closer to the middle of the back of the neck to help rotate your hand forward. Keeping just a little space between your hand and the bottom edge of the neck will help your fingers arch and allow them to better land on individual strings without muting others. Here are some right handed pictures but you’ll see what I’m talking about.
