And what about putting the new game/map out on my Twitch channel, but what about copyright, etc.? Just asking because I do have the idea, know the commands, but it is going to take a long time to build, but I could purchase someone else's design/build(s) and use my mini game/game on it and then it would take very little time to finish.

Any and all advice is greatly appreciated!!!!

1. get an idea of what you want to build
2. start planning the build
3. experiment with the design
4. start building (this is the most tedious process)
5. upload and finish!

1) Learn commands, redstone and data packs
2) Think of what you want to build
3) Draw up a sketch/redstone figure
4) Recruit members on PMC (or anyone else) cuz more people = awesome building speed
5) Build!

First of all you need an idea of what you want to build
next thing can be done in 2 method:
1. recruit people
2. learn command and datapack while building on your own

1. Be a good builder
2. Be a command block expert