Big purple button. It will tell you what to do. You don't need my help.
For those of you thinking this is a knock-off of chalkmarrow's project: chalkmarrow's project is line-based (it picks random predefined lines). Mine is word-based (it picks random predefined words, and assembles them into lines. This project has two lists: one with words, and another with the numbers of syllables in those words. When you create a haiku, it gets a random word from the list and checks it against the number of syllables in the current line. If it fits, it is added to the line.