A shape poem, also known as a concrete poem or a calligram, is a poem that is shaped like the thing it describes. The shape of the poem adds to its meaning and can be used to enhance the visual impact of the words. Shape poems can come in different types, such as creating a silhouette of a picture or using the words to create a line drawing. Some examples of shape poems include "Easter Wings" and "The Altar" by George Herbert, which were published in 1633, and "This crosstree here" by Robert Herrick, which is set in the shape of a cross and was published in 1647. To write a shape poem, you will need to brainstorm ideas, create the shape template, and then add in the poem so it sits within the form properly. You can use literary devices such as rhyme and repetition in your shape poem to tie the lines together and make the text more engaging.