And the line breaks?
Often, if not always, you want the poem to move forward—to move the reader forward. Do you end the line in the middle of a thought or a phrase? Do you end with a verb?
(Here I admit that I have a completely inflexible aversion to ending a line with "and"; I think it's a part of my editor character flaw.)
Or do you want each line to be able to stand, with strength and rhythm, on its own?
I think the answer lies in some graceful balance between the two. How do you find it?