Be sure you adhere to all of the rules of the assignment – rhymed verse? Length? Subject matter? Etc. But, in the abstract, your poem should be “concentrated word magic.” Concentrated means efficient, with every word doing a job, offering an image, furthering a theme, or providing a rhythm (example: “on those occasions when I think of my eventual demise” vs. “When I have fears that I may cease to be” In this second clause, each word provides a cadence -- here, iambic pentameter) Word means taking advantage of every linguistic subtlety available to you – connotation (prostitute vs. whore vs. lady of the night), sound (murmur is a perfect word – it “sounds” like its meaning), ambiguity (“Oh, that the everlasting had not fixed his canons ’gainst self-slaughter”), etc. Magic means that the combination of all the elements makes something greater than the parts, and that greater “something” is beyond the normal or predictable. To make the poem outstanding, you must pay attention to every detail, and to every choice available to you, and to the complexity and honesty of your theme. Finally, you must not censure your imagination – dare to make unique choices.