It should be divided into two or more parts.
Hope this helps :)
The main motif of the poem is that Dickinson compares poetry, obviously and famously her favorite form, to a house or building that extends ad infinitum, or forever--the possibilities of poetry are endless. I hope my answer has come to your help. God bless and have a nice day ahead!
not enough information is given to answer your question. do you have sources?