Halfway there: You’re halfway to writing a poem if you can nick all the lines from other poets. A cento (meaning patchwork) is such a poem. Take each complete line from a different poem but, if you so desire, change the punctuation and get some enjambment in there. The effect can be quite surreal.
Have a look at John Ashbery’s ‘The Dong With The Luminous Nose’.
(Don’t forget to list the line data at the end to impress everyone!)
http://www.english.txstate.edu/cohen_p/poetry/Ashbery.html