A Narrative Poem

My poem today, "Tortoises Slow SunRail", is a little different in style from what i have been doing.  It's more narrative, written in full sentences.  Using a narrative style leaves me open to the question, "What makes that a poem?" There's alliteration, assonance, consonnace, imagery, and a certain rhythm to the phrasing, but mailnly it's a poem because I said it's a poem.