Can you play them…
…in all twelve keys, smoothly and evenly, the full range of your instrument(s)?
…with a beautiful sound on each and every note, and each note right in tune?
…with poised, elegant phrasing?
…in eighth notes at quarter = 100? 120? 140? 160? How about eighth-note triplets? Sixteenths?
…all slurred? All tongued? In mixed articulation patterns?
…with a variety of dynamic nuances?
…in pairs of ascending thirds, up and down the scale? Descending thirds? Fourths? Fifths? Sixths? Sevenths? Octaves? (Ninths…) How about ascending and descending diatonic triads? How about adding sevenths (plus ninths…) to the triads?
…using all relevant combinations of alternate fingerings?
…while double- and triple-tonguing? While circular breathing? While standing on your head?
I’m going to go practice for a while. Tune in June, 2018 for a follow-up post, “Now let’s try minor scales.”