The vestibule should form a natural and easy transition from the plain architecture of the street to the privacy of the interior. The epigraph forms a transition via quotation to the decorated interior of the poem from street language. Write lighter first lines than last lines.
End stops make lines less gloomy.
Lines background contents or act as decoration. Decorate for coherence, function, and pleasure. Construction regulates design. Different techniques lead to different styles. Apply it to unify the poem.