Entire rocket, with straw visible, nose cone and parachute inside.
Entire rocket, with nose cone and parachute out, fully visible, along with any cords or strings attaching them to the rocket.
Directly at tail end of rocket, clearly showing engine in place, and the clip at the bottom of the engine (the small bent metal wire, in this case.)
Directly at tail end of rocket, with engine, nose cone and parachute removed.
Close up of bottom end of rocket, showing the engine, fully pushed in, but still sticking out below bottom of rocket, and clearly showing that there is space between the bottom of the engine and the bottom of the tail fins. Yours may not be a zoomed in as this example, but make sure it's clear, and shows what is described above.
If it is visible from the outside, please include a photo of the "engine block", ie the thing placed at the top end of the engine to prevent it from flying up through the middle of the tube This was described in class as a pin pushed through the fuselage of the rocket. This particular rocket had an internal mechanism that was not visible from the outside. If that is the case with your rocket, don't send Picture 6, but do include a description of what you did for this component, e.g. "I had a small hollow cardboard tube glued on the inside of the fuselgage, that the engine butts up against."