Hello everybody!
The overtone serie... : I think is essential for any kind of composition, to know and master the overtones serie. It's important to compose knowing how the sounds behave. You can experiment this on the piano or, more clearly on a guitar.
Do you have the overtones in mind when you compose?
Here a very nice explanation and helpful article about the overtone series. Hope you find it helpful too!
https://www.piano-composer-teacher-london.co.uk/post/overtone-series-harmonicity-and-anharmonicity-as-the-foundation-of-harmony