Pic copyright
Hi! and welcome.
I live in Bristol and I've been on Wikipedia since January 2003. I just want to make a small point; it's a requirement that you say if your pics are public domain or whatever. I just looked at Notre-Dame de Paris article and I notice there is no copyright or PD notice when I click on the mag glass.
I don't understand the details of the GNU Free Documentation Licence and luckily I don't have to worry because many of the thousand pics I've put on WP are my own and I've declared them all to be PD. The rest are off PD web pages or I've got permission to use them.
At any rate, some mention of the pics status must be given on the page you get when you click on the mag glass. I've started using the automatic message, which is  {{msg:PD}}, underneath my own message. Have a look at Saab 340 to see what the PD message produces.
Also you could have a look at the Image Description Pages from User:Arpingstone/pic list for ideas on how to do messages.
Best Wishes,