How do Projects and xml work?

Straticah

Hey there, so i have a basic understanding of how HISE works and how i can code in HISE.
Since i am a beginner i have played around with the software and have discovered a lot of awesome features.
In my last projects i have saved my code and synths that i have created as an xml file. I have the feeling that this might not be the optimal way since it is inside a Project folder.

So my question is: do i have to create a new project folder for each VST that i want to export later on? And what role do xml have? I disovered that all my things i did so far in hise were saved to my first project inside a folder named XmlPresetBackups - i have a feeling that my xmls each need a project directory with all the subfolders.

Any way that i can clean this up and make separate projects? What is the common directory workflow in vst programming?
Apprechiate any videos or tips how to have a clean workflow. :)