What are the main differences or similarities? of the book the tell tail hart, the painting the last journey, and the play Romeo and Juliet.

These sites tell you how to set up comparison/contrast papers (or oral reports or whatever you are assigned to do):

http://grammar.ccc.commnet.edu/grammar/composition/comparison.htm

http://leo.stcloudstate.edu/acadwrite/comparcontrast.html

http://www.rscc.cc.tn.us/owl&writingcenter/OWL/Com_Con.html

... except you'll be comparing/contrasting three items, not two.

Let us know what you come up with.