sharpened with a lesson

Commonly they say "I'm sorry". But poets are different. We make our own type of depth within the word I'm sorry. " I drew a mark that could be never erase. So I refined myself with a sharpener. Grinded with the razor edge, yet I grew more finer. I learned and would never drew a mark on someone again." What about you? How would you say sorry in a poetic form?