How hard it is

So I am doin a study of Madison Sq. Park in Manhattan as my project for the photography class. For the last three days I've been carrying my camera to the office and when I cross the park I take pictures. I've taken about 200 so far and I am beginning to run out of ideas. The mark is gorgeous but it is all green and simple. I am beginning to some subtlities that I wasn't seeing earlier. I saw this leaf on a bench and took a photo that came out really well. I saw some reflections in water puddles that came out OK.