A few from the past week, comments or suggestions?

These are a few of my favorites from the past week, please give me your honest opinions and ways i can improve my photography skills. None of these pictures have been post processed, so any suggestions for that stage are also appreciated.

IMAGE LINK: http://www.flickr.com/​photos/bryn_wlch/49691​34254/

IMAGE LINK: http://www.flickr.com/​photos/bryn_wlch/49685​24985/

IMAGE LINK: http://www.flickr.com/​photos/bryn_wlch/49651​01833/

IMAGE LINK: http://www.flickr.com/​photos/bryn_wlch/49650​99329/

Hey, nice pictures, they look good to me, perhaps a little dark on the graffe, and the dragonfly would be good facing you, but it would be too easy if they just popped up and said hi, I like the colour of the buttterfly, some pp could bring the saturation up and really make the orange pop.
Last one is dark again, makes them look almost underground, dark in a nice way in my opinion!

well done

d

Thanks for the feedback!