How do you take note of the feel/groove you want when writing a song?
first, a tempo marking. then maybe sort of sing the groove. maybe mention another song for reference. maybe say certain drum specifics, like "snare on 4." singing the basic kick snare pattern. maybe say whether it has swung 16ths, and how much. maybe a suggestion at what kind of instruments/sounds to do. but most important is just the tempo marking