To begin writing the poem, think about its goal and what you are trying to achieve. Because the poem describes an event in a life and celebrates that life, think of how you can communicate the importance of the event. Write about what the event means to you and others.
While writing, avoid cliches that take away from the genuine meaning of the poem. Instead of using a cliche, find other ways to describe thoughts and feelings. Use imagery in your poem, as it helps invoke a stronger emotional response. There are many senses that you can appeal to in order to convey meaning and significance.