I had forgotten to take pictures of the in-process sewing of my pillowcase, but here are three different angles of the final product

Inverted:

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The front:

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The back:

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Though I found that the physical activity of sewing is very easy, I realized that the thought process of making a functional end product was a bit tricky. To make a functional pillowcase, I had to think about the process backwards, inverting the fabric during the process and accounting for the hem for the initial cut (I had to redo the pillow because of a mistake). I also had to account for the seam length, the corner rumples, and the forward-backward motion to secure the thread–all these things I never really thought about.