Linda Randolph submitted this photo taken with a Kodak DX6490 at 1/125sec at f/3.2 The exposure and depth of field are good. The head of the praying mantis shows up nicely, to get more light under the leaf hold a reflector or white board below the frame and light will bounce back up onto the underside of the leaf allowing more detail in the insect to be shown. As to composition try to include the complete leaf of the plant along the left side of the frame, you have just barely cut off both leaves. The two lighter objects in the background are distracting, you can either recompose the frame when taking the photo to block them out, physically remove the objects or as a last resort clone them out in post processing. With the horizontal nature of the leaf and insect consider cropping off the bottom leaf leaving the image more of a rectangle and less to compete for the viewer's attention. This is a great start.