While this scene wasn't the most challenging to pull off, the effect is one of the coolest. I have done things like it before for static images on my guild's website but the process is pretty much the same for video.

The key here is understanding a little bit of Physical Science from school.. remember the whole thing about reflected light, "The angle of incedence equals the angle of reflection"? That comes into play when you consider that your camera is about six feet off the ground. You have to use your mind's eye to imagine that you are standing there and observing the reflection keeping proper perspective.

First, using WoW Model Viewer you need to find the animation that you want to use and record it looping a few times.

Take note of the camera angle. The easiest way that I have found, since you don't have numeric control over the camera position is to use the left mouse button and only move on the Y-axis. This tilts the character forward and back instead of rotating him around his central axis. I use his feet as an indicator. I tilt him back until the soles of his feet arelevel with the camera. This means that the camera is now on the ground. Next, since I took mental note of how far I had to move the mouse to tilt his back to this point, I just keep tilting him back by the same amount. This will put the camera at the same distance below the plane of the ground as it was above.

It looks odd, but trust me, it works. Now record the exact same animation loop a few times through. Now that you have both shots it is time to merge them together. Since the second is the reflection it would need to be upside down. However, you can't just rotate the image 180 degrees like the next image shows. This would put the neck of the guitar on the wrong side and it really isn't a reflection.   

Instead, you will need to flip the image across the Vertical Axis. this will put it upside down and the neck of the guitar will be on the correct side. Then, when you composite the image, just have the reflected image below the regular one and you have what looks like the model standing on a mirror. To make sure that it lines up correctly I used the soles of his feet as a guide and made sure that they lined up. Also, make sure that they are both starting on the same frame of animation.

And there you have it, a physically correct reflected image all done with editing.

The rest of the scenes in the video are just a bunch of ideas and camera angles that I had in my head while trying to learn the software. I am not sure where I plan to take it from here but I hope that you learned a little bit that can help you make your machinima film a little better.