The second photo shows how the stand looks set up without the cakes on it. Please keep in mind that I always have the PVC touching the cake, and not just the support pole. I also wrap the support pole in electrical tape and Saran wrap, to ensure that the pole does not come in contact with the cake. You can see a slight tilt to the acrylic rounds. You can cut the angles for the PVC to be as extreme as you wish, just be aware that a slight angle will have a pretty large impact on the angle.
The third photo shows the first cake on the stand with the PVC pipe through the cake. It also shows the angle I wish to cut the pipe at to achieve the desired tilt I want for the next cake.
The next photo shows the second tier dropped on the first tier. The weight of the tier rest on the PVC pipe and acrylic round, not on the tier below. You can see that some of the pipe shows, but you can easily cover that with fondant decorations. In order to get the cake on the pole at the angle I want, I use the pre-cut pipe as my guide, and use a plastic dowel to start the hole. Then, I widen the hole to fit the PVC through the cake without damaging the cake tier.
The last photo shows all of the cakes stacked up on top of each other, repeating the process until I have a finished cake. I would then go ahead and cover the gaps with decorations so that they could not be seen.
I hope this was helpful, and it you have any questions, feel free to ask!