This is both for learning a scale for the first time and for a scale you’ve been working on for years.
Listen to yourself.
Play the trickier speeds with different articulations. This also will improve your tonguing, especially with the faster speeds.
Breathe as much as you need to, and experiment with breathing – things like try using all your air in 8 beats, or 12.
Vary the volume, not only between runs but also between notes. For example, one way to build up breath control and embouchure is doing whole notes and then crescendo for one whole note and decrescendo for the next whole note. Make it as smooth as possible, and with consistently good tone.
Rhythms – use for difficult passages in general to increase finger control and speed. Start slow, speed up the quarter note as you improve. Practice with different articulations.
And for your convenience, a printable version! Use it well. – C Major rhythms