Here is part six of a six-part series on using chromatic triads and scales. This video will suggest a few ways that the scale level transformations might be used melodically.
Scales from levels (here is a zip file containing all of the scale formulas along with listing of the scales in C, F, B-flat, and G. It is suggested that you use the scale formulas and work out the scales in other keys as an exercise.)
https://drive.google.com/file/d/1lwfNClotdJThZh8wffQfffPTLT1Mc95n/view?usp=sharing