How does this poem represent a modern version of the blazon?

In blazon, the poetry usually highlights different parts of women and admiring its beauty.

The poem that you displayed highlight different parts of Man and admiring its beauty. Which is an impact of a modernization, when it's acceptable for Man to be displayed as feminine and female to be displayed as masculine.

Hope this helps

First of all you have to know that a blazon or referred to as blason is a poem which the speaker describes the body of his or her lover. It focuses on many parts of a woman’s body. It mostly emphasises on the physical beauty.

In this poem there are metaphors and similes to describe each of the attributes. Also it is describing the physical beauty of a man.

I hope it helps, Regards.

Just gather as many details