In other words, if you write free verse and they prefer sonnets, it is unlikely that you will be accepted. Therefore, one should research the publisher before submitting. One has to observe closely and write only the concrete, arranging the lines so that the reader can capture the AHA of the moment. I began writing haiku because I am drawn to nature. That is a general statement.
Nature is used to set the stage for the poem.
Now I see. This in turn makes you more aware of these things when you write.