I want to start practicing scales but there's something bothering me. What angle should be between your fingers and the fretboard (if your index is pressing a fret on the A string should it be muting the D string?), also, how much bending is allowed in your wrist ( my wrist bends when i play on the 6th string while having my pinky and index on the 6th string-in this case im not muting any other strings with my fretting hand fingers). I'm really afraid of developing bad habts but I want to start practicing scales real bad, coz I find them fun. Please help so I can start improving my playing!