Auden, In Memory of W. B. Yeats elegy about Yeats, in the style of Yeats
Ferlinghetti, Populist Manifesto No. 1, a poem inspired by Whitman
Rosten, a poem for Whitman

In a tool box:

VISION
I.. Beliefs and values: description 1, examples 1a, 1b; description 2, example 2; description 3, examples 3a, 3b, 3c. . . .
II. Favorite topics:  label, example  of each
III Favorite images and symbols:  name, example of each
IV. Favorite themes: name, example of each; relationship of each to I, II, and/or III

VOICE (sound, order, means of meaning, kinds of utterance)
I. Kinds of utterance: song, secret shared, command, monologue, dialogue, story, argument, description; traditional or nontraditional whole-poem forms (characteristic or favorite choices; examples)
II. Means of meaning: word choices and their reasons, imagery, metonymy, metaphor, symbol (characteristic or favorite choices; examples)
III. Order: choices among (e.g. questions, commands, statements, verb choices) and violation of ordinary prose forms; words within sentence; line endings; paragraphs and/or stanzas and/or other subdivisions; order of information; relation to time, space, importance, associations: typical choices and examples (you might want to start with something "typical" and then figure out what habit it suggests.  Repetitions of phrases and ideas.
IV.  Repetitions and similarities of sound; relation to meaning.  Beginnings of lines? word forms? ends of lines? recurrent words?  same or similar vowel sounds? same or similar consonants? rhythm? meter? cadence?  examples, examples, examples.
 

Alternative approach: express similar information in an essay format.  For example, you might begin something like this (filling in the blanks):  If a poem were about ____________ or ___________ or ___________ and it contained images or symbols such as __________ or ____________ or _________ and the poet seemed concerned about __________ and ________________, I would suspect that it was a poem by or influenced by _______________.  (Develop by giving fuller definitions of the material in the blanks and many examples from specific poems.) Then you would go on to say, "_______'s poetic voice is also distinctive.  To give his poetry the effect of music, for example, he ____ .  Although he occasionally uses ____________ (e.g., metaphor), he seems to prefer to develop his meaning with ___________ and _________.

For those of you who want to go on reading poetry and reading it better, and who may occasionally need a "handbook" to help you with terms, etc., I STRONGLY recommend two books:

Kowit, Steve. In the Palm of Your Hand: The Poet's Portable Workshop.  Oriented to the writer of poetry; elementary but satisfying
Vendler, Helen.  Poems. Poets. Poetry: An Introduction and Anthology. Intended for beginners but becomes very sophisticated--Vendler is generally considered the best modern critic of poetry, and this is the book she wrote for her students at Harvard.