Great color on these!
#1 Would be much nicer with a major crop on the insect if that is supposed to be your subject (assuming it is sharp.. looks like it might not be!)
#2 subject is soft, and at the distance it looks like you shot at.. more DOF would have gotten all the stamens sharp too.
#3 nice.. but it leaves me wanting something more.
#4 subject is soft / OOF