I never use a tripod, although I have a few. Not much use for bugs as they don't stay long enough. Birds don't hand around too long either. A few times I hold the flower still like the first Photo and then get close.
I've never seen a green bee before!! I can almost count the pollen grains on the one in your second photograph.
Another first for me Kildale. Are the green wasps pollen eaters or are they predatory like the ones over here?