[Dan Donaldson] “Hello. I am trying to make a projector light. I was figuring of using a spot light and pulling it away from the wall so that it gave me the circle that I wanted. Am I heading in the right direction?”
Yup. And you can use the light transmission property of 3D layers to shine lights through them (like a projector shining light through film) to make an image:
https://library.creativecow.net/articles/gerard_rick/Projection_tut.php
[Dan Donaldson] “Also, I wanted to add a gate weaving effect like the one showing here.”
There are quite a few ways to accomplish that effect, but I’d start with wiggling [link] a layer’s position.
Walter Soyka
Principal & Designer at Keen Live
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
RenderBreak Blog – What I’m thinking when my workstation’s thinking
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