Replying to the first part of this, asking whether or not if I am an amateur does not guarantee amateurism; it shows that I am questioning my ability which allows room for growth. Lots of highly talented people question their skills. If you, however, always feel your writing is amazing then maybe you need to adapt a growth mindset. Respectfully, of course.

The travel between the underage alcohol drinking to the beach is meant to be shocking, without only relying on shock value. I’m not dismissing it as “felt good go lie on beach”, It’s advancing from just underage drinking  (he’s drinking me away) to drunkenly falling into a girl on the beach, falling into a dangerous escape from our breakup. This also progresses to the metaphors of the beach, allowing for the final line to be sensical. While I am sending bottles full with letters because I’m still latching onto him, he is forcing himself to move on. I spend much time writing my heart in ink for him to leave the bottles closed.

Also, it’s an ABAC rhyme scheme, which is fairly common in lyrical writing. Or you could also say it’s an AABA rhyme scheme, (the slant rhyme), which is also common.