Check out articles and books from those in the music industry and well-known musicians who have years of experience with songwriting.
Listen and Watch
Interviews and podcasts with Songwriters are everywhere, and each person will have a different take on how to craft a tune, and all of them are valid.
Come up with some topics you’d like to write about, from a breakup to a fight with your mom.
Jot Down Ideas
From single words to complete stanzas, keep a notebook with you and write down everything that comes to mind.
Piece It All Together
Once you have some phrases or lines that are all about the same topic or theme, try putting them together in a different order to see how they work.
Do these lyrics sound and feel right? If not, is it the words? The order? Maybe how you’re singing them? Take your time and play with everything.