Writing a Triplet Poem
Decide on the subject of your poem. This will help you determine your form.
Decide on the rhyming scheme you want to use. It is a common practice in triplet poems to have each of the three lines rhyme, or just the first and last lines.
Determine whether you want to have specific syllable counts for lines, such as 10, 12, 10 or 15, 12, 15.
Write the poem, based on the things you've decided.