Not bad. Of the closer ones, the first is better, but I'd center it. I know many photographers will tell you not to center the subject, and with something symmetric it's usually not that effective. However, I'd prefer it to pushing the flower against the side of the frame with nothing on the other side, which just makes it unbalanced. According to most books on composition in art, lack of balance is the biggest sin, and centering usually doesn't even make the list.
The last is the better of the longer shots because the flowers more nearly fill the frame. I'd prefer not to have the frame cut into any of the flowers, but that's very difficult to do and you have to balance that against getting the composition you want. It might have been better to lower the camera just a bit to get more of the flowers along the lower edge, but this works for me.