You know, for a first song ever, this isn't even half bad! You purposely went for something slow and ambient, which gives you room to experiment with chords, instrument layering, and more. I think it turned out great really. About the repetitiveness, I can tell what you tried to do; every time the main melody repeats you layer on something new, in your case mostly new drum patterns. If you want a suggestion, sometimes adding a new accompanying melody can help vary stuff up if you want to use a melody again. Or you can also write 2-3 melodies and cycle through those with the tricks you're already using! But yeah, this is a strong start to what is going to be an exciting journey. Keep up the great work, and I can't wait to see what you're gonna make next!