Alan, I seem to have the opposite problem.. I have a set of civilians, waving flags etc, I also have some of the Tamiya marching Brit Infantry which I can use. I just can't find my Bren Carrier...

I know I packed it in a box, for our house move, and can I find that box ? Can I $**^..... I might have to cheat a little and use a vehicle that I have already build, rather than for this campaign, but at least the figs will be done this week..

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As for your Sherman, I think it looks good, but I think I know what you mean. It might be that the flowers look a bit big and to evenly spaced. Maybe try to trow them more together, on the turret and around the front hatches, and less (or none) on the engine deck. They might look even better in a bigger pile.
Cheers
Henk