Accidentally littered, feeling absolutely terrible!

Hey witches, I recently brought a Starbucks reusable plastic cup to school, and while I was walking home it must’ve slipped out of my water bottle pocket, and I felt so guilty that i accidentally littered. I was never a litterer and I would always pick up others trash. Anyway, I saw someone picking up my shards of plastic (must’ve been ran over) and I never felt more guilty and sick. I’ve been working with the ocean as my main source of energy and I just love nature in general, so what can I do to make it up to her?