Look around your yard through the tube. Hold your hand below the tube and move it very slowly upward. The hole doesn't make the picture. The image of the world is always there. All the hole does is make it possible for you to see it.
Light reflects off the red rose, the blue iris, the white daisy, and the green leaves.
If you hold a piece of white paper near the bouquet, some of that reflected light will shine on the paper-but it won't look like anything. That's because light bouncing off the red rose ends up overlapping with light bouncing off the blue iris, the white daisy, and the green leaves. There are many images of the bouquet on the paper-but they overlap with one another, and the colors all blend together, making a jumble of light. The hole isolates a small part of the light, sorting a single image from the jumble. Only a few of the light rays reflecting off each point on the rose are traveling in a direction that will let them pass through the hole.