Chalk Drawings

N2 love chalk but more often than not, they want someone else to draw them pictures on the driveway.  They will tell me what to draw and I am supposed to draw it.  Luckily they ask for things that I can draw-penguins, ladybugs, sailboats, rainbows, butterflies, hearts, etc.  After I draw, they like to take out the big push broom and brush over my masterpieces.  They can only brush over pictures drawn for them or else a fit will ensue.  My poor masterpieces: