Even if you don't plan on entering a macro, go take a look at all the entries anyway; there are lots of impressive close-up photos of all sorts of things. The world certainly wouldn't be as nice and interesting if God hadn't given it beauty in all its forms.
In a departure from the flower theme, here's my photo:
|Look into the Orb|
And here's another one:
You may have noticed that I switched the second photo with an edited version that I just finished tweaking with Photoshop CS5; today was my first day using and editing RAW format photos.