Sure Marshy, It's according to what specificaly you want to know!! Otherwise we'd have to spend a day typing out a disertation on Macro. There are books for that! In the first photo, I'd have tried to get the light source around in front of the subject or at least to the side. But that's me not you! What were you trying for? You see without this info we can only asume that you meant to have the light source there to get the light coming through the subject and give that particular effect. Those were good shots from the limited knowledge we have of what you were going for!! I'm a one finger typer and that's gonna do it for today!!
PS It will help if we had the exif data on those to see what you did. I'd like to know because they might help me improve my macro shots.