Which ONE is a better poem like which one has more methods and techniques that you can write about???

Exposure or My last Duchess

If you're asking which might be easier to write about I would say exposure because it uses more advanced words which make it sound nicer to write about and it also is a little easier to understand what it is talking about which should help you with writing on it. I personally prefer Exposure but it's your choice.

Explanation:

check your question

"facing the rising sun of our new day begun

let us march on till victory is won.",

because the rising sun is a symbol of hope.