A few years back while in Bordeaux, France, I snapped a photo of a pigeon sitting atop the head of a statue. Though I felt almost sacrilegious doing so (the statue was part of a cathedral's exterior) it made a striking subject for a watercolor: the absurd combination of a bird unabashedly resting upon such a solemn scene.
And those folds of cloth. Irresistible.
As an art student I initially was required to draw others' art. Translating a 3-dimensional piece of art onto a piece of paper was an interesting exercise.