How would you write an introduction to an analysis of "The Woodsplurge"?

An example of Pre-Raphaelite work, typical of the late 19th century, Rossetti’s poem ‘The Woodspurge’ is literary piece of work that displays how depression can affect your state of mind. It is characteristically set against nature, and has a whispering ‘w’ sound which runs through the entire poem. Rossetti utilises the concept of ‘less is more’ in this rendition of his frame of mind, to convey how lost and alone his depression has rendered him.