My Killer Crossbow Instructions

Finally my instructions arrived.This IS my first instructable so plz be nice. it fires about 10 ft or more.

Step 1: Step One the Butt

Sorry if my instructions are not that clear but its beacause i am new to instructables.
1.build the first pic (not including the top extra green bits) twice.
2.The second pic might help you.

Step 2: Ammo

You must be dumb not to get this step done right

Step 3: Trigger System

Build one of the pictures because they are all the same.

Step 4: Now the Hard Part Unfortunately

Thanks to my bad camera this will be a bit tricky.
once again build one of the pictures.

Step 5: Voila Finished

Now finally put it together.