Roll up your sleeves and get to work
What is wrong with learning? Study and work is the only way of getting beyond rookie.
Start with gathering information - start with below links - you are required to study as if this is a highschool project.
The forum search engine is great for that
- Search results for 'install manjaro manually @linux-aarhus' - Manjaro Linux Forum
- Search results for 'buildiso' - Manjaro Linux Forum
Learn to install manually before building iso
- CLI installation - #2 by linux-aarhus
- How to install Manjaro on USB stick? - #4 by linux-aarhus
- [root tip] [How To] Manjaro-To-Go LXDE with persistance
- [root tip] [How To] Do a manual Manjaro installation
buildiso related stuff
- [root tip] [How To] Mini guide to build Manjaro ISO
- Build Manjaro ISOs with buildiso - Manjaro
- README.md · master · Profiles & Settings / iso-profiles · GitLab
- README.md · master · Tools / development-tools / manjaro-tools · GitLab
video
External site with a lot of documents
Lastly
On Manjaro Downloads you find this question and answer
Is manjaro better than other distros?
Manjaro is not superior or inferior to any other Linux distribution, they all do the same. Manjaro has its own repositories, package manager, themes, software and custom Kernels.
Creating a customized Manjaro ISO is hard work - there is no shortcuts - there is no free meals - there is noone who will cook the ISO for you.
- In the iso-profiles repo manjaro/gnome folder you find the Gnome cookbook
- Search the repo for pantheon related packages.
- Use the Arch wiki for Pantheon
- Download a minimal Manjaro Gnome and create a VirtualBox VM
- Download the elementary ISO and create a VirtualBox VM
- Spin up the Gnome virtual machine
- Spin up the Elementary desktop - then take it apart to see why it works the way it does.
- In your Gnome VM sync the packages required to have a basic Pantheon desktop
- Make notes - lots of notes - learn from your mistakes
- Be prepared to do a lot of testing and experimenting