Thanks David,
It sounds like you are having better luck than me. Only 1 out 100 of my macros are keepers. I start my macro sesions with the best intensions. I get my tripod set up and use a remote release. With the 500D I have to make 200 small tripod adjustments just to get the camera in the correct possition to focus. Then, I have to make another 50 adjustments with my ballhead and zoom to get the correct composition. After i am all set, there is a gust of wind which moves my flowers around and I have to start the process all over again. When I am finally set up again, a bee or butterfly lands on a flower just outside my frame so I unhook my camera from the tripod and chase the bug arund the garden. This results in some pics that look good on the LCD so I say to myself, "why bother with that tripod? Just turn the flash up really bright and you can handhold." When I get home, I find out I have a CF card full of blurry flower pictures and I swear I'll use my tripod next time.
BTW, both the above pics were taken handheld. For the top picture, I was laying on my back in the dirt. It was the only one of ten from the same angle that turned out sharp. It is hard for me to feel like an artist when I am relying more on luck than skill.