https://ledgernote.com/blog/interesting/...-emotions/
I also recommend looking up what each interval feels like
(min. 2nd, maj. 2nd, m3, M3, P4, A4, P5, D5, m6, M6, m7, M7)
on google
use 3ds a lot and make sure that every voice in a melody is within the chord you're using
that's pretty much everything I know