Things to get..

We need to make up some fake blood to drip over the bridge, we will make quite a lot as it may go wrong!
food dye in the water bowl shots could be tricky to film right. Practice for this will begin straight away so we know the right consistancys and containers for the best shots.
A gun to be wrapped up in plastic bags should be ok to get
Stones to throw over the bridge will be in abundance around the forest!

Costumes are pretty uncomplicated for our characters, the boy will be wearing a hoody so that he can wear it up adding to the concealment that we want to convey. The girl will be wearing light or possibly white clothes to make the audience feel she could be innocent but really this will be a double bluff as she is the protaganists. We want her to be blonde for this reason to. To show off her blonde hair we want it to be worn down.