Pinhole Camera Experiment

Sorry sir, I couldn't answer some of the questions because I hadn't tried the experiments, and 1 I think I didn't understand. And it says 15th of April because I typed the Title and made this post then, (But I didn't answer all the questions then ), I just hadn't published it.

Experiment 1
WHAT TO DO
Collect the pin-hole camera and make a small hole with the pin in the black paper. Hold the camera about 3m from the window and look through the camera at the lamp
You should see and image of the lamp on the tracing paper screen. Write down what the window looks like. Is it:
a) Upside down or the right way up? it is upside down
b) In color or black and white? it is black and white
c) The same size as the window itself or not? no it was way smaller

Experiment 2
WHAT TO DO
Change the distance of the pin-hole camera from the window.
How does this affect:
a) The size of the image?
b) How clear the image is?

Experiment 3
WHAT TO DO
Make another pinhole about 1 cm from the first one
Describe what you see below.
Didn't do this.

Experiment 4
WHAT TO DO
Make ONE of the pin-holes bigger using a pencil point.
What affect does it have on:
a) How bright the image is? it gets brighter the bigger the hole is
b) How clear the image is? it gets blurrier the bigger the hole is
b) How big the image is? it gets bigger as the hole gets bigger

Experiment 5
WHAT TO DO
Take off the black paper and stick a lens over the hole in the cardboard, INSIDE the box. Repeat experiments 1 and 2 using the lens. Didn't do this.

Experiment 6
WHAT TO DO
1. Look at the windows through the pin-hole camera especially if it is a sunny day. Didn't try this.
2. Sit someone in the beam of the projector and look at them with the pinhole camera. A: the person sitting was seen on the top of the pinhole camera, the pictures turns upside down when projected
3. Try lenses with different focal lengths (large or small curvatures). Didn't try this.

QUESTIONS
1. Why was the inside of you camera painted black?
2. Why was the light shield used?
3. Why was the image so much better with a lens?

FOLLOW UP TOPICS
1. Try to take an actual photograph with your pin-hole camera
2. Draw ray diagrams to show how the image is formed on the tracing paper screen