Flying in France - Selling photos

[DroneAngel]

Hi everyone. I wonder if anyone can help. I have recently moved to France from the UK and have a Mavic 2 Pro and a Mini. I have passed the online french Formation Des Telepilots, but have no further certification. I am about to take my A2 C of C in the UK (I had this arranged before I left). Is it valid in Europe after Dec 31st (I hear it is)? I cannot seem to find this information anywhere. Also, what do I need to do to fly in France and sell the photos (mainly to stock agencies) and do it legally? Any ideas? I have all the numbers to label the drones and a UAS Operator Registration number with my SIRET number, but I need to know what else to do to be able to sell the photos/videos taken. Many thanks for any advice. Also, if anyone knows a good place to fly in 06 - please let me know! Thanks.