How do you say I'm alright thank you thanks for liking my picture in French?

i think its mercy

Merci pour autoriser la photo. Merci pour permettre la photo.

There's no word for picture in Spanish. You have to be specific about the medium. However, when they're translated into English, it's fair to use picture/s even when the specific media are known....

"merci pour ta carte postale"

non merci