Scoop the hummus into a shallow round bowl. Smooth the top. Place a bowl of hummus into a square platter.
For the bottom layer cut cucumber and green bell pepper. Place them around the hummus bowl.
For the top layer cut red, orange and yellow bell peppers into leaf shapes.
Arrange the matchstick carrots as straw hair on the top and bottom of the face.
Form the hat with crackers. Place crackers into 2 rows.
Add a small piece of parsley or basil as the flower.
To make the scarecrow face, slice the black olives and place two slices as eyes. For nose and mouth use bell peppers or sliced up some olives into thin strips lengthwise to make the mouth.