This exercise is from my new book Classical Guitar Technique: Essential Exercises, Scales, and Arpeggios. The 122 page book includes: Practice Routines, Tips, 100 Open String Exercises, 120 Giuliani Arpeggios, Scales, Slur Exercises, Shifts, Finger Independence, Barre, Tremolo, Common Harmonics, and much more.
Speed = Economy of Motion + Accuracy + Relaxation
Economy of motion is the act of eliminating unneeded movements. Keeping your fingers close to the strings and preparing your fingers directly over the frets increases efficiency. Accuracy is self-explanatory but should not be overlooked. Placing your fingers close to the frets allows you to play with less pressure and tension. Relaxation enables you to access reflexes connected to your body’s natural ergonomic movements. Focus on slow, accurate playing and relaxation. Allow speed to come naturally as a result of good practice.