i made my tile and added the explanation

tile.py

@@ -10,15 +10,15 @@ def draw_tile_outline(size):
     square(size)
 
 def draw_squiggle(size):
-    forward(size/4)
-    pencolor("black")
+    forward(size/8)
+    pencolor("red")
     left(90)
     quarter_arc_right(size/4)
     quarter_arc_left(size/4)
     quarter_arc_left(size/4)
     quarter_arc_right(size/4)
     left(90)
-    fly(size/4)
+    fly(size/8)
     left(90)
     fly(size)
     left(90)

tile_grid.py

@@ -10,7 +10,9 @@ from tile import fly
 def draw_tile_grid(width, height, tile_size, tile_function):
     """Draws a (width x height) grid, with tile_function drawn on each tile.
 
-    (Your explanation here.)
+    (creates a tile and then moves to the starting point of the next tile 
+    untill there are no more tiles in width and then repates for as many 
+    times as heights exist)
     """
     for y in range(height):
         for x in range(width):