The video is fine but it fails to teach you whats really happening. You don't have to use the X pattern but it helps. Initially you should use an angle or an X. I prefer to angle intially so the entire bevel gets sharp. Later, with an extra light touch the x pattern is the best method, especially with a smaller hone. Pyramiding is the principle of using the 4,000 grit (or any other low number) in conjuntion with the 8,000 grit in an alternating pattern usually like 1 pass on the 4,000 followed by 3 on the 8,000 then returning to the 4,000. This allows the blade to get sharp faster than wasting time polishing an edge with the 8,000 which is not capable of shaving sharpness anyway. Typically you would test shave often with this process because you'll get success quickly and you don't want to overhone. Pryamiding is a simple process and yet brilliant. Don't forget to test shave often.

I suggest you use a light touch and the x pattern and roll the blade over on its spine when honing. First passes on 4k and then 8k, alternating until you have a sharp blade. Keep the blade flat, keep the angle the same for each side, use equal pressure on each side, and ensure the blade travels the same distance on each side for each grit. Make sure the blade "lands" on the hone gently when you flip it on its back.

Also, you need to do some more reading and research. Look at the 1961 Barbers manual and it explains honing in a very easy to understand text. Also read through the posts more.