First: These are good shots! But I'll nitpick, just so you have something besides kudos.
The lily is a little... cold. It may be the obvious fill flash, but something's a little too sterile about it. It might be underexposed, but I can't tell for sure. I just ran it through PS for about 14 seconds, and couldn't make it right. So maybe I'm crazy. The out of focus tree in the lower right is unfortunate.
The honey bee on flower is nice, as well. However, it's killing me that the front side of the bud is out of focus. More DOF here, I guess. But then you'd probably have a focused background, which is even worse. At least it's sharp on the bee, and tack sharp. Good job!
The last one is obviously a different crop, and it's also nice. I like the empty background. White space makes this photo. I'd have liked to see a little more of the bud though, as it gets pretty corner heavy.
So, hopefully I haven't taken the wind from your sails. These are all very good shots! I just thought I'd nag on anything I might try on the next shot, were they mine.