The beauty of poetry...no need to worry over punctuation. some may disagree but you actually don't need it at all if the arrangement is right. Use your line breaks as you would punctuation, to set the pace of your poem lines, create suspense, etc. Again others may disagree, and I do believe in learning form but its your poem, poetry is art, paint the page with your words, the effects of punctuation in poetry occur in your placement of the words, their rhythm.

"Every line means something."
Jean Michel Basquiat