This quest can be acquired by interacting with any one of the relevant crooked paintings in The Winter Palace courtyard. As a hidden quest, you won’t be able to track your progress from the journal. However, the quest will complete once you’ve corrected each painting. In addition, for each painting that you correct, you will receive a stat boost relevant to your particular class.
The first painting can be found in the tavern with Sera and Iron Bull, in the north western part of the courtyard.
The second painting can be found in a small outhouse north west of the tavern where you corrected the first painting.
The third painting can be found in the bathhouse in the eastern part of the courtyard. You will find it in the south east area of the bathhouse.
The fourth and fifth paintings can be found in a hallway on the top floor of The Winter Palace. These can only be reached after attending the first Exalted Council meeting.
Note: You can reach the top floor of The Winter Palace by climbing the garden Trellis, located in the western section of the courtyard.