Familiarize yourself with poetic devices beyond rhythm and rhyme. These include:
Other sound devices such as alliteration, assonance and repetition. Alliteration is the use of words that begin with the same consonant sound; assonance is the use of words that contain the same vowel sounds; and repetition is, of course, repeating words and phrases for effect.
Edgar Allan Poe's poem, "The Raven", contains examples of these three devices:
Once upon a midnight dreary, while I pondered, weak and weary,
Over many a quaint and curious volume of forgotten lore,
While I nodded, nearly napping, suddenly there came a tapping
As of someone gently rapping, rapping at my chamber door.
"'Tis some visitor," I muttered, "tapping at my chamber door -
Only this, and nothing more."
Imagery--words and phrases that evoke all five senses. These include specific and concrete nouns as well as adjectives; in fact, a specific noun is much better than a general noun modified by adjectives:
BAD: large gray waterfowl
GOOD: Great Blue Heron
Powerful verbs also create vivid imagery. Replace the verb "run" with more precise verbs like sprint, lope, gallop, amble, race, scamper.
Figurative language, which includes similes, metaphors and personification. Instead of writing, "Birds were singing sweetly in the trees," write "The mockingbirds sounded like a choir on Sunday morning" (simile), or "A cardinal performed a solo" (personification).
Decide on a purpose or theme for your poem. This might be creative writing, self-exploration, the expression of love for a person or place, or a cause such as environmentalism.
Choose a topic that is suitable for your purpose.
Do a prewriting activity. Make lists of specific and concrete nouns and precise verbs that pertain to the topic and fit into the theme. For example, if the purpose is self-exploration and the topic is "what I love about summer", your list might look like this:
Great Blue Herons fishing in the lagoon
Licking up blue popsicle drips
Seining in Pimlico Sound
Comet showers
Monarch butterflies
Sunsets
Expand on the items in your list using different poetic devices. Use alliteration by turning "Sunsets" into "Scarlet streaks of sunset against the inlet sky." Elaborate on "comet showers" with personification. Call it "a handful of stars tossed into the night".
Look for patterns or prevailing sentiments in your writing. Whatever emerges from your prewriting activity, let it guide the poem's final form. Reading your work out loud is an excellent way to decide how the wording should be arranged or which words do not belong. Your poem is finished when it sounds right to you.