Hi,
Nice pictures. Second time only so good!
Think most pictures you achieve very nice background. Also, one thing i notice is that we tend to put the target in the center. I have shot only 1 time and I also doing this. Think its for the ease of focusing. But I dont know whether macro should follow rule of thirds as well.
I love #1, very nice and sharp but only have the bright spots below the insect. Otherwise, PERFECT! hehe. #3 is cool too. I love the stem that the dragonfly is resting on. The composition is nice.
Regards,
tltan