Answer and Explanation:
1. It is not possible to compare "to Jennie" with the poems you saw in the other classes, but we can say that "To Jennie" is a short poem and structured in three stanzas, where the first two stanzas have 4 verses and the last stanza has 6 verses. The poem presents the ABCBDEFEGFGF rhyme system, which was the feature that most caught my attention, as it presents interesting musicality and rhythm.
2. In the last lines the speaker presents an emotion of farewell, loss and nostalgia. That's because he is saying goodbye to a friend with whom he has fun, happy and comfortable memories.