Practice Hanon exercises with a metronome (from 60 to 108 bpm). Set a tempo and play exactly with the metronome. Start out slowly enough that you can play the exercises perfectly.
Try to practice Hanon Exercise N°1 in the other keys, starting with the white keys (C, D, E, F, G, A, and B) and then going to the black keys
(D-flat, E-flat, G-flat, A-flat, and
B-flat). You can also transpose Hanon exercises through the cycle of fifths. The fingering remains constant in all keys.
Practice with various dynamics. Practice soft, loud and everything in between.
As you practice piano, vary the touch. Play staccato, play legato, and play two-note slurs.
Practice in different rhythms.
And as Charles-Louis Hanon recommends it, practice the exercises by lifting the fingers high and with precision, playing each note very distinctly.
We hope the above tips will help make your piano practice more efficient.