Copy of Desktop Ff to USB

Hello, I am completely new to this.

I have downloaded and installed portableapps on an empty USB stick.
I have then clicked the apps I want on it, and they were installed there.

But... what I want is my own complete Ff setup, incl bookmarks and addons, that I have on my desktop.
If I remember correctly, that would be the Ff Profile.
But, naturally the folder where I normally would paste a copy of the profile, is not on the USB stick.....

How do I transfer this to the USB stick?

Thanks