Don't forget to check the calendar(s) for session times. Sessions are held on different platforms, so be sure to find out where the session will take place:-
LEN English sessions:-
Listening Practice 24/7
English radio playlists:-
You can write a caption, write about how the photo makes you feel, or simply write a description of what you can see in the picture.
If you want to really push yourself, try to make up a little story.