You start by reading this article and listening to all the videos in the links.
We stress again the importance of workflow and reading.
A lot of reading and comparing.
Use the code that is online and learn from it. Then make your own decisions and make your own vision of an operating system.
We will be using these two githubs.
We will build the iso and test it out. Later we will test out the ArchLinux Tweak Tool – in the end that was the intention/goal.