ok just a piece of my mind

1. too messy..should go nearer and focus on one subject
2. the flower is facing upwards..sideview cant see the "face" of the flower...
3. nice try...you might wanna try to go nearer/try diff angle to get a more plain background
4. you focused on the left part of the flower..best if you are focusing on the stigma
5. its not really good to use direct flash to shoot close-up. a lot of harsh shadows will be produced.my suggestion: meter the background and use an under-compensated flash. take note of the background too.to tackle the background if too messy, use high shutter speed as it doesnt affect the flash.
6. i like this shot but its OOF. should be focusing on the middle of the flower

take note of the right-hand bottom too

7. This flower is kinda common and since it has long petals its quite hard to get a very special angle.try diff subject
8. since this is shot by a fired flash, why not go to the highest shutter speed possible to make the background pithc black if possible so that the frog will stand out...also,shoot from the front and not the back of the frog

9. nice... but need a lil more punch in colors...
10

11. very nice shot but DOF a lil too shallow.
12 the flash made the shot not nice

13. the dragonfly is underexposed...use spot metering and meter the subject instead of its background

14. DOF too shallow...try shooting from front also

15. i kinda like this shot

maybe you can try to go nearer with a wider angle so that the web would be more protruding?
16. the subject is too small and its dead-center. a shot gone wrong

17. very nice shot...might wanna brighten up the shot a lil..coz its black
18. looks like a norm snashot

19.

i luv this shot

20. OOF and color lack of contrast
21. the background it distracting and the subject is underexposed...use spot metering
22. i like how to wings are flapping but the color lack of punch. the subject is too small also. try not to put yr subject dead-center
23. this would be a perfect shot if only the DOF wasnt that shallow.
all in all what i noticed from yr photos:
-DOF too shallow
-OOF
-color kinda pale..dunno why

-subject dead-center, makes it look very normal/tiada oomph
haha...after one long post, hope you dun mind me being soooooo long-winded