What--nobody is going to comment on the lovely rimlighting on the leaf's top edge? And how that delineates the shape of the leaf,and contrasts strongly with the shadowed portions of the leaf? It's not too bad of a shot!
As far as people doubting the degree of out of focus blur and the 18-55 kit lens at f/5.6; like Homer Simpson says, "Doah!". When a lens is focused to a very close focusing distance,and the background is very far away, the depth of field will be very shallow. Even with an 18-55mm lens on a small capture format like APS-C; however, as the focusing distance grows longer, short focal lengths like 18-55 mm on APS-C will quickly gain depth of field. InTempus' samples above are not really relevant due to the huge increase in capture format size (his 5D-II has a sensor 2.5x larger than a small-format Canon body has, and DOF that is roughy 2.5 to 1.6x shallower than APS-C with identical focal lengths,depending on camera-to-subject distances).
But at focusing distances like 1o to 20 feet, achieving "shallow" depth of field on APS-C with an 18-55 kit lens is almost impossible,even with the lens wide-open at f/5.6. But with the subject close to minimum focusing distance,and the background 200 to 300 times farther away than the camera-to-subject distance, the kit lens even at f/8 at 18mm is going to produce a shallow DOF effect. Camera-to-subject distance is in fact, the single largest controller/determinant of depth of field; notice how BIG that leaf is????
I agree with those who suggest that the OOF white objects are distracting from the main subject,which is the leaf seen close-up.