Answer:
Literary elements, as distinct from literary techniques, refer to the fundamental aspects of a work, such as its mood, tone, theme, style, and form. So, this question isn't asking you about the use of simile and metaphor in this poem, although it is of course constructed around the figurative concept of life having "loveliness to sell." We are looking at broader aspects of the poem here, so we might consider:
Structure: The poem is divided into three stanzas and is written in rhyming verse. The rhyme scheme, abcbdd, unites the whole poem.
Mood: The mood of the poem is uplifting and optimistic, focused as it is upon the "loveliness" of life and all that it has to offer. The speaker ends by exhorting the reader to "[g]ive all you have been" in search of the "ecstasy" that can be found in life.
Tone: The tone of a poem represents the speaker's attitude towards the subject. The tone of this poem is positive and encouraging; the speaker has an optimistic outlook on life which she wishes to communicate to the reader.
Plot: There isn't a plot to this poem, as such; it does not have a narrative. Instead, it is a sort of reverie, describing the various elements of "loveliness" we might find throughout our lives and encouraging the reader to seize these.
Explanation:
