Thank you so much!
with this one specifically, I had a chord progression in mind that i had tinkered with previously but never did anything with. Because of that, the hardest part being starting the song went smoothly since I already had an idea of what I wanted to do.
Melodies are the easy part to me. Once I have a chords and a baseline, I just listen to it on repeat and play different things until I find something I like. With this song, I didn’t really give myself time to decide what melodies I liked and just went with the first thing that sounded good.