Earn the "Transcendence" trophy, then play the start of the game by using the "Chapter Select" menu. From the middle of the starting area, look to the right to find three big cloths coming out of the ground. Walk into them to turn your cloak and scarf white. The white scarf will instantly regenerate scarf power after you jump.
Every time you complete the game, your robe (either red or white) has a new pattern added to it. The first is just gold around the hem, but each time after that the pattern becomes more intricate until it fully covers you. It's important to note that the game must be fully completed from arER to end to unlock the next pattern. Unlock the following embroideries by performing the corresponding task: