Here is an example of an extended Flower Turtles project. 
 It creates three flowers, by setting different initial x and y coordinates for the turtles.  In addition, each flower:
has a different number of turtles, who:
  take a different number of steps forward
  are a different size
  are a different color
Other extensions (to remix and try):
Make the  turtles turn the opposite direction
Change the size of the flowers
Or, beginning with one flower only, make the petals a different shape (a square, a triangle, a hexagon).