Hello Stephen,
very nice vignette! Excellent composition, great atmosphere and of course high quality work! I will enjoy seeing it in the flesh at euro very much I'm sure.
Only one idea: maybe you can cut a bit from the left side of the groundwork to make it even more compact. Now it looks a bit empty there, and the flag can easily be placed more to the right, or simply cut also. But maybe you are already planning to fill that space in an interesting way.
Congrats on a beautifull piece, and have lots of fun painting it!
Best wishes,
Marijn