I have 2 flowy blouses today for refashions.
The first one comes from a table runner (or whatever it was- it is still up for debate). I converted it to a tunic top by simply folding it in half, making a neck hole, and adding a quick line of sewing to make it form fitting. More information here.
Next I had a blouse that was too big and I decided to do a "quick fix" by adding buttonholes so I can take in the top at the waist with a belt. Done! More information here.