I tried to sew Pattern C (White Blouse) in the book Dressmaking at Home by Machiko Kayaki. It's a simple blouse that has just 4 pieces (front, back, collar, and bias binding) and seemed doable enough for an introduction into clothesmaking.
The tips found on this site on interpreting Japanese patterns was very helpful in figuring how much seam allowance to add when cutting out the pieces.
Using some fabric found in the remnant pile at a fabric stall in Kyoto, I made my version in what feels like polyester, although the fabric does tend to hold a crease, so maybe not 100% polyester.
This pattern would be great in a cotton gauze or other lightweight fabric for warm summers because the shirt is loose, but still has some shaping, and the collar keeps it from being too basic.