What are the requirements for our Liberland residency photo?

During the Liberland Registration Process it asks for a photo of myself, should that be your typical passport profile photo (white background, not smiling, hair down and out of the face, eyebrows visible), or can it be any photo of ourselves? What exactly are the photo requirements?

Hopefully you’ve got past this by now, but for mine I just took a normal selfie and tried not to smile. I think it’s just to verify that you’re the same person as the one pictured in the identification you submitted.