Good photos, I specially like #8. Since I think what you really want is some tips and recommendations, here it goes.
#1 is blurry and out of focus. Macro photography is quite difficult and you generally need a tripod. Using flash and a small aperture in this case would make the background go almost completely black, make this to make the flower stand up and be more attractive.
#2 lacks composition. I think that shooting from ground level could really improve this one.
#3 is overexposed. Be sure you are using matrix metering for this kind of photos and watch out the exposure.
#4, this one I like a lot. Maybe, as someone already said, you could get lower to get a better composition. I would also use fill-flash and change the exposure to make the background less bright.
#5 lacks composition. I would have got to floor level and then take the photo with a blurry background. Tho you might need a different lens for this.
#6 looks tasty.
Maybe a little cold.
#7: lower, lower! Try and simulate how an ant would see this.
#8: I like it, a lot! I would like it a bit warmer, but, this is simply my taste, I tend to prefer warmer photos. And might also crop it, take out a little from the right and a little from the bottom.
#9, mmmmmm. I think you get it.
(Tip: what am I supposed to be looking at).
#10 is overexposed. I prefer #8.
I hope this helps you. And keep up working and learning. One recommendation tho: forget about Auto modes. Those are for P&S, use manual (M) and you'll see how fast you start improving your technique.
The only auto mode I use now is Auto ISO. I hate to change ISO, and I don't care much about some noise. So I find it perfect for me.