There are lots of ways to create #Alphabetpoetry. Here are a few ideas:
A) Take each letter and write a poem about it
B) Use up all the letters of the alphabet in your poem. Write a-z or z-a vertically so each line starts with a letter.
Helpful Weblinks:
https://www.writersdigest.com/personal-updates/alphabet-poetry-or-going-back-to-school
https://en.wikipedia.org/wiki/Alphabet_(poetry_collection) interesting example using the Fibonacci sequence.