Poetic Criticism

I believe you can strengthen the 'mood' quality in the specificity of depth with regards to the tactile nature of the poem. 

For example, 'covered mass' may be replaced by 'dewy moss', 'fog shrouded', etc., perhaps implying the coming of Spring which the next line will help support by 'waking from the drizzling tears' of clouds and so forth. 

Nature's details open the portal to our moods because they are our emotional make up in a sense. Fear and howling wind go hand in hand, for example.

There are mood qualities in every event of nature. The Chinese have a specific character describing the quiet contemplation of watching the mysterious disappearance of say, a flock of birds flying in the distance, or a distant ship disappearing into the ocean fog. Detail is the key in capturing essence, abstractions always remain one dimensional so to speak. You may write of a conversation between two people over coffee and capture the mood not by the content of the discussion, but by the detail of their actions during the conversation, such as how they grab the mugs to permeate warmth through the body, blowing ripples as the sobering steam rises and fogs their glasses, etc. These details permeate deep into the reader because of 'sensation', 'tactility'.

In sculpture for example, the enticement to touch the piece evokes sensuality beyond vision and concept. Going a level deeper is the ability of sense transference, where a painting for example, may evoke taste through vision, specific taste. We had an instructor in Sci Arc who had students suck on two lemons inside a dark closet, then draw the experience of the taste. 

This was an exercise in understanding the essence of 'lemoness' as an individual quality. Every object in life has its specificity.   This awareness of the five senses is key in bringing life into any creation we do. Abstraction always falls short and is limited to concept. We always made a joke of conceptually driven architects having to stand by their buildings and explain its 'meaning' to all who enter.