Patchwork Girl

In a story parallel to that of the monstrous Patchwork Girl is that of L. Frank Baum's, Patchwork Girl of Oz, first published in 1913. Like Mary's monster she is not feminine.  
Shelley Jackson mixes the story with that of the construction of the story.  

Conception

When I found the quilt, I became nervous to a most painful degree; the fall of a leaf startled me, and I shunned my fellow creatures as if I had been guilty of a crime. Wasn't writing the realm of the Truth? Isn't the Truth clear, distinct, and one? But I said to myself that the quilt would do nicely for the girl, for when she was brought to life she would not be proud nor haughty, as the Glass Cat is, for such a dreadful mixture of colors would discourage her from trying to be dignified. (9)

A Single Space

While a single space can contain a large amount of text, most authors will want to split large spaces into more manageable parts. Just add an unusual character where you want each writing space to end, and choose EXPLODE from the menu. I cut up the quilt, creating a new copy of each paragraph in its own writing space. The exploded spaces are all created inside a new writing space, a very well-shaped girl, which I stuffed with cotton-wadding. (9)

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  The boy Ojo is keen that the Patchwork girl will not lack any positive quality. He tips in more of each quality.

Bottles

But Ojo was more interested just then in the Patchwork Girl's brains. Thinking it unkind to deprive her of any good qualities that were handy, the boy took down every bottle on the shelf and poured some of the contents in Margolotte's dish (9)

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Shelley Jackson slips between the two texts of Mary's Monster and the Patchwork Girl of Oz and descriptions of the creative process of writing. The artist is like the magician, creating life out of scraps but the artist's scraps are drawn from themselves.
  
The magician does not notice the boy. The magician brings her to life with some magic powder.  
  The idea of female beauty is in itself a patchwork girl.

From: Beauty Patches

One of the first proposals for using computer graphics was to assemble a composite of the best features of various actresses--Garbo's eyes, Bardot's mouth, Welch's breasts. (9)

 

  
The creators are become one and the process of creation is that of conception and birth.  

Advice

"The artist must create an integrated corpus out of detachable elements. Natural defects and imperfections need to be remedied as soon as possible, whether with cotton to fill out what is too flat, or to make one part the size of another, or by indented edges, a higher slipper, a corselet, and various remedies as needed. Try not to get ripped, or your stuffing may fall out. One of your eyes seems loose, and you may have to sew it on tighter." Then she wraps me from my ankles to my chin in clay-encrusted strips. Her parting words of advice: "If you talk too much you'll wear out your scarlet plush tongue, which ought to have been hemmed on the edges." - - - - - - - - - - - - - - - - - - - - - (9)