Good Poetry doesn't just happen. As with any good writing, you have to
study and work at it and rewrite until it sounds good.
Poetry is more complex than prose, it conveys mood and emotion as well
as specific denotation and connotation in its specific words.
The sound and rhythm is important in saying what you want to express to
Bad poetry just sounds bad. Good poetry sounds good and the sense
should come from the sound.
Here are some of my favorite
books on writing poetry