Which is an example of a compare-and-contrast text structure? A cinquain poem differs from a diamante poem in the number of lines and the approach to subject matter. The first step to writing a cinquain poem is to choose a one-word subject to use as the first line. If having trouble writing poetry, begin with an easier format such as cinquain or diamante. It is best to write a diamante poem for the class project because its format fits the subject matter well.