TK99 said:But as for emotional impact for the scene...
...Leia's face her face fixed in shock and mouth open and eye's welling up in tears but only one rolls down her cheek. It's simple, [and] powerful... [It] would have to be cut with Obi-wan's look of shock too at sensing the death of Alderaan.
Just something I quickly put together to illustrate TK99's idea.
This sort of popped into my head as I was thinking about how the scene could be done.