This is my dirty drop. When I was creating the glare/reflection on the water drop I made offset copies and intersected them with the original shape. Then I used the pathfiner window to eliminate the sections of the intersecting shapes that were unnecessary. I made my own paint brush that put the specks of dirt in the drop by creating an ellipse and dragging it into the brushes panel. I changed the settings of the brush so that it would create randomly sized and placed specks.