There were a few things changed with the Grease Pencil since this video was created. Instead of duplicating it the way he did, I tested it out by duplicating it from the "Asset Shelf" at the bottom of the screen. Then I proceeded to follow the steps he did. Where he tweaked "UV", I think I changed "Rotation". I also lowered the Spacing under the Advanced options to make the dots appear closer together. I couldn't find the curves he adjusted, though, but pretty much everything else I did was just like he did in the video.
(also want to make sure to save changes to asset under the down carot by the picture of the brush. You can also use that area to create a new preview image based on the new material)
