I didn’t understand the question
The poetic techniques that are illustrated in the opening lines of this poem are personification and enjambment.
Personification is when inanimate objects have human qualities, such as <em>and my skin has betrayed me.
</em>Enjambment is when the though found in one line is transferred into the following one, such as in <em>still sucks his thumb/in secret.</em>
What do you mean? are we supposed to have read that book or is that something else?