This sonnet that starts with A woman's face with nature's own hand painted was written by William Sheakspeare.
The text is organised into three quatrains and a final rhyming couplet. This structure remember us the structure of Elizabethan sonnet.

The three quatrains have the fuction to describe the beauty of the fair youth and his dual character-nature. He looks like a woman.

In the firts stanza, the lirical I adresses to the fair youth and he makes a description about him. It isn't a physical description so you don't have any clue about his face or his dressing style. But you know that he has the face of a woman and a gentle heart, but he is not changeable like false woman. All qualities given to the fair youth is female even if you know that the fair youth is a man. So the reader may be curious to find out why the lirical I  see the fair youth as a woman.

In the second stanza, the speaking voice continues describing him saying that he has a bright eye that can change in colour gold the things he sees. It is introduced a comparison betwwen the fair youth and womans and of course he is superior. In line 7 you can focus the attention of the word man so here it is the contrast of what the lirical I has been saying before. The stanza ends by saying that when the fair youth goes across man and woman he has been seen by them.

The next four lines deal with issues like sex and sexuality. The fair youth was created as a woman but Nature added something to this woman male organ. So he could please woman disappointing the speaker. Here you can make a consideration maybe the lirical I was in love with the fair youth but a t the time he couldn't have the chance to declere his feelings.

In the final ryhming couplet the fair youth soisfy woman's pleasure.