You have done a good job of reading the poem closely and understanding that in the poem the act of making clothes serves as a religious metaphor. I'm not sure if the first paragraph, as written, really says much; it strikes me mainly as filler.
One way to do an analysis is to divide your essay into sections, each dealing with a single aspect of the poem. Thus the topics you might want to cover are:
Introduction/Background: As an introduction to the poem, you should mention that Edward Taylor lived from 1642 to 1729, was born in England, and was a dissenting minister who emigrated to the United States in response to the 1662 Act of Uniformity. "Huswifery" reflects Taylor's strong religious beliefs.
Meter/Form: The poem consists of three six-line stanzas of iambic pentameter, rhymed ABABCC. You might discuss Taylor's use of assonance and rhythmical variations in this section, and then cover more details about the stanzaic form.
Dramatic Situation: The next section of an analysis might cover the dramatic situation of the poem. It is written in the first person and addresses God in the second person, in a style quite similar to a prayer. In this section of your essay, you might talk about the genre of poem as prayer and the influence of the Psalms on the poem's style.
Central Theme and Metaphor: As you mention, the central metaphor of the poem is the notion of God clothing the speaker and making the speaker his instrument. In discussing metaphor you want to separate the "tenor" (how God's grace can transform the speaker) from vehicle (the images of spinning and clothing), showing how the poem moves from images of creating garments and clothing the speaker to the speaker's inward transformation.