Hi Bruce ,
Those are some very pretty flowers. My favorite is the bottom one, which I, personally think would look cropped to just include the flower. It has an interesting shape and I don't think the negative space at the left is bringing anything that makes the image more interesting.
As for the other flowers, I can see that you are shooting with very harsh sunlight and to me, it's creating really contrasty shadows that I think takes away from the delicate nature of these beautiful irises. Perhaps consider shooting early morning or late evening, at the golden hour when the sun is low and glorious and soft. If this is impossible, then perhaps consider using a white scrim (you could probably make one easily for very few $) and that would soften the harsh sunlight.
I hope that it is alright that I have offered some critique as I remember you writing that you were here not only to share but also to learn. I'm also new here and not sure if you must have asked for a critique first. If I'm out of order, please let me know
Maggie