I'm certainly no pro, but here's my humble opinion.
1) I don't really like the leaves in the foreground. It seems to draw the focus away from the flower. Overall, I like the colors (but I'm easily amused..hehe)
2) With the way the leaves are on the left side, it looks like the angry RAWR plant from Mario Bros. The background draws the eye away from the main focus, but overall, it's a good shot
3) The bottom-right-most flower seems very blurred, but this is definitely a better shot for the flowers. It seems like there's too much "sky," if you will (too much on the top of the image). It also tends to draw your eye away from the flower. Overall, it's a good shot.