On Andrea's second attempt to pick up the pliers with her toes, she picks them up with the head pointing from the top of her toes. In the next shot, the handles are pointed out.
When Rick, Michonne, and Daryl arrive back at the prison with the bus full of people from Woodbury it is shown in one shot to be a yellow school-bus with hastily added metal and wood siding on the sides as armor. In this shot, it drives past the overturned gray bus that served the prison.
In the next shot, the bus shown arriving at the prison yard is the gray prison bus, without the makeshift-armor, and the yellow school bus is nowhere to be seen.
When Andrea picks the pliers with her feet, the handles are pointing up but in the next shot they are pointing down.