Obviously, you're free to download them and use on your desktop, phone, etc.
For use in YouTube videos, etc: Please contact me first.
Everything in 2k folder:
Those are just showcase thing available in 900x900.
I keep original 2000x2000 files to myself.
For use in YouTube videos, etc: Please contact me. I might even give you original files.
Check additional information box.
Also, you can contact me here via note.