Rima,
You are right, I have seen a lot of 1/72 dioramas and some are just awesome, the advantage of 1/72 is also that you can create bigger scenes, on the other hand, creating bigger scenes also create bigger problems in the line of story telling, layout etc..
You dio looks great, but I am in no position to give any critique, since I am no 1/72 builder and have no Napoleon era knowledge, sorry
But ... Rima, I am sure that others will respond, give it some time, ok, you posted it and you expected a immediate response (so it seems), but frankly, there are not many Napoleon Diorama builders here, don't expect that 2000 members or constantly only looking for post to respond to (they or not all like me #:-))
Like I said, I looks great to me, but who am I???