Rules for Writing Haiku
There are no specific rules for writing haiku; however, the structure of haiku is always the same, including the following features:
Only three lines, totaling 17 syllables throughout
The first line must be only 5 syllables
The second line must be comprised of 7 syllables
The third line must be 5 syllables like the first
Punctuation and capitalization rules are up to the poet, and need not follow rigid rules used in structuring sentences
Haiku does not have to rhyme, in fact many times it does not rhyme at all
Some haiku can include the repetition of words or sounds