You’re going to need to give some careful thought to, for example, your camera position and lens f-stops. Right now it looks like you’re using an extreme wide-angle (“fish-eye”) point of view. The stack of paper turns into a pyramid and the surrounding forest scene turns into a bowl. You might well get away with that for a few frames, but that’s only one camera setup out of many.
Realistically, what’s going to happen during the course of the scene is that there’s going to have to be a series of cut-shots … an establishing shot, close-ups of a stack of paper “magically growing,” longer shots, maybe a boom-shot where the camera follows the paper from a side-on view, rising upward along with the paper, and so on. Each of those shots is going to have to be shot and handled separately, then edited together to make the final.
What I’d do next, then, is to try to block-out the entire sequence. Figure out what shots and camera-setups you’re going to use, and try to put together a series of animatic-style shots that seems and feels reasonable. Then go back and start working out the details of each camera-setup. Don’t invest time in building “serious geometry” at a point where you’re simply trying to decide where everything’s going to fit within the frame. Try to decide exactly “where everything’s going to fit” before actually constructing any serious geometry.
The general process of “actual” modeling is going to be things like, yeah, random selections and lots of use of modifiers. But every setup, every individual shot, is probably going to require a little different treatment. (“Looks” consistent, but “is” different…) You want to invest the time to figure out how to do each shot, only after you’ve first established (a) that you actually need the shot, and (b) exactly what range of frames you’re going to need to produce for each one.
This isn’t a case where you build a marvelous set and then go back and figure out how you want to photograph it. Figure out what you want to photograph, then build “no more and no less than” what you therefore must have to shoot.