Minecraft 1.16 World Customization Tutorial

In light of Minecraft 1.16 coming out soon with a major update to world customization, I figured that I would revamp my old "How to customize your superflat world in Minecraft" video, and expand upon it further.

-Timestamps-
0:20 - Self-Explanatory Options
1:17 - Data Packs
4:07 - More World Options
5:23 - World Types
5:50 - Customizing Your Superflat World
8:48 - Back to World Types

-Custom Superflat Worlds- (Sorry they're all concrete I'm not that creative)
Concrete Overworld - minecraft:red_concrete,3*minecraft:yellow_concrete,12*minecraft:light_gray_concrete,3*minecraft:brown_concrete,minecraft:lime_concrete;minecraft:plains
Oreo - minecraft:black_concrete,2*minecraft:white_concrete,minecraft:black_concrete;minecraft:plains
Concrete Nether - minecraft:black_concrete,128*minecraft:red_concrete,minecraft:black_concrete;minecraft:hell

P.S.
Sorry that the video is in 900p rather than 1080p, I realized too late that I recorded in the wrong resolution...