Strictly speaking, a haiku is a three-line poem with the first line having 5 syllables, the second having 7, and the third having 5. Typically the subject is something about nature, such as the moon, a bird, a flower, etc., and/or a season of the year. Traditionally, they should not make a glaring 'statement', but the meaning should be subtle and sharp, zen-like. Most were originally written in Asian languages, esp. Japanese. Because English is so different from Japanese, with different stresses and often monosyllable words, many poets do not completely adhere to the 5/7/5 format, but usually do keep to the 3 lines. When you follow the formula, it's easy to create haiku, but creating a really good one can be very challenging-there's not a word to spare. Check the work of an ancient poet called Basho-I'm pretty sure you'll find samples of his poetry on the Internet. He's considered one of the masters of the genre. I hope this helps, Nibedita.