Creating writing is a workbook design to help with writing skills and to help create a love for writing. Sentences, Poetry and Definitions. Acrostic poetry is a poem where letters in each line spell out a word or phrase. Usually, the first letter of each line is used to spell a word or give a message, but they can also appear anywhere. Acrostics are easy and fun to write because there is no need to rhyme. Each line can be as short or as long as you want it to be.