I would definitely say that is not the best way to do it.
But I didn't watch the whole thing with sound on, so maybe there was some reason for doing it so roundabout.
Use extrude, not stacks.
Usually, you make a box and extrude it 4 times and snap the vertecies together.
Why would you use 'extrude' to do the 'move's job?
Also, use the 'Flatten' tool, it makes everything very nice and precise.
You didn't bevel it correctly either. You need to make it so it looks like:
Frankly, I would make my own, but your voice is lovey and I sound like a 10 year old.