I have always liked the paintings of Georgia O'Keefe, and often think of her when I am shooting flowers up close. I don't have a macro lens, so another way to get up close and personal with your subject is to use the "reverse lens technique". For this "poor man's macro", you take your lens off the camera, invert it and hold it up to the camera, focus and shoot. It takes a little practice, and you have to be careful hold tight so no dust gets into the camera. There are good tutorials for this technique online here and here.