One thing I like about shorter pieces is the tweaking you can do with enjambment and end punctuation.
I feel inclined to mostly stick with convention when it comes to my longer, prose-y stuff – just because I like my pieces to be read out loud just as easily, but with shorter, floatier stuff you can play around with how punctuation and floating lines make you feel.
Maybe a period can help convey the finality or weight in a line’s stop. A comma and a dash deliver two distinct kinds of pauses at the end of a word. And no punctuation at all can leave lines hanging there, about to drift into something else or nothing at all.