I have to take a poem and write an essay on the form, and how it supports the content of the poem. In a formal essay style: 5 paragraphs, 3 sub-topics.
I just need some second opinions with analyzing the form. Im also not quite sure as to what type of thesis I will use either. Please help if you can.

Here is the poem:
By: Dylan Thompson
Do not go gentle into that good night.
Do not go gentle into that good night,
Old age should burn and rave at close of day;
Rage, rage agianst the dying of the light.
Though wise men at their end know dark is right,
Because their words had forked no lightning they
Do not go gentle into that good night.
Good men, the last wave by, crying how bright
Their frail deeds might have danced in a green bay,
Rage, rage against the dying of the light.
Wild men who caught and sang the sun in flight,
And learn, too late, they greived it on its way,
Do not go gentle into that good night.
Grave men, near death, who see the blinding sight
Blind eyes could blaze like meteors and be gay,
Rage, rage against the dying of the light.
And you, my father, there on the sad height,
Curse bless, me now with your fierce tears, I pray.
Do not go gentle into that good night.
Rage, rage against the dying of the light