Responding to Tony's comments, I'll take a stab at my own suggestions.
In the first, I'd like to see a bit more detail in the moth (butterfly?), so I agree that a bit lighter and with a bit more contrast would help.
The second one looks just fine as is, and it's my favorite of the three. Dwayne's processing tends to be gentle rather than shouting, and I like it that way. Many photographers like to pump up both contrast and saturation to no good effect, and I'm glad that Dwayne doesn't.
In the third, I agree that the background seems to compete with the flower somewhat, but I'm not sure any change in processing would fix that.
I must add that I have often tried to take a successful flower photo, and I haven't succeeded yet.
Eric M.