I think the KM5D makes a great cam for macro due to the built in AS....helps alot in taking shots.
Technically, the shots are good. Details are there and in focus. You may want to compose the subject abit more. Usually, taking insects from the back is not so appealing. Sometimes from the front or sideways. If sideways, try to keep the camera plane parallel to the subject so all the insect is in focus.
For #2 shots, I like the contrasting colours. was it taken in bright sun? A slight burst of fill flash may highlight the shadows of the long legged fly.