I actually watched your original topic and there were some interesting question but you need to compartmentalize them into several topics. You could do that later after this topic is finished. To get this one started, you could ask creationists how their theory explains how we see stars older than 6000 years old and start from there to get a coherent theory about light, it's propriety and origins. The question is just there to show what a theory is supposed to explain.
Then, for the equivalent to Evolution in a creation theory (in an other topic), you would ask what kinds God started with (beings at the level of species? family? genus? ,etc...) and how did it go from there, giving a rough "history of life" from a creationist perspective. In a different topic, you would ask about geology, etc....
Those are just my proposition though, tell me if it's what you had in mind when you first proposed your topic.
I think I understand what you're trying to do. What I advised was to ask about their theory in "smaller chunks" in order to make things clearer. After all, a creationists shouldn't ask for a single theory from scientists about how the universe was created and came species to be there since several theories are needed to cover that (big bang, star generation, abiogenesis, evolution, etc...). So the equivalent from creationists should also be small chunks explaining each things. Of course, I'm speculating only since I've yet to actually see a creationist theory in the scientific science.
But this topic is about YOUR theory about light. A scientific theory must make predictions (about how light will behave if you are right). For example, given your theory, what should we be observing? How would it differ from the current theory?
Well, if you don't have a theory about the origin of light (we kind of expected you to with the "let there be light" thing), you could at least present your theories and prediction about light properties.