see how the center flower stems are sharper compared to the flower itself. that's not very good.
DOF (depth of field) refers to a range of distance in front of the camera that will be in focus (sharp). in this case, only the stem is in your focus range, but the flower and the background is not (that's why they're blurry).
so DOF can both be a good thing and a bad thing. the good thing about your photo is the background is blur. this is good so the background wont be distracting. but the bad thing about your photo is your subject (the flower) is blurred as well.
the two main things that control DOF is Aperture (your lens can open wide and small just like your eyes...aperture is how big the opening is) and focal length (distance between you and your subject). this means there are two things you can try to improve:
1) easiest is just take the photo from a further distance. you can later crop (cut off the sides) the photo on your PC. unfortunately this also makes the background less blur (or less "bokeh"). just try to find a good balance

2) if you have a camera with manual controls (or any DSLR and interchangeables), set to Aperture Priority mode. normally there's a dial on top of ur camera and you switch it to 'A' or 'Av' (canon). take multiple exact shots while you increase and increase the aperture 'F' number. you'll see the higher number makes a larger 'range' of things in focus (a deeper DOF) so you can have more of the flower in focus.
BUT....shooting at this range (near closest focus distance) with small aperture is also hard to get the flower petal and the middle part in focus, dept of field goes even smaller when the focal length increase