Sorry to say but there are quite a few things wrong here.
Firstly the flower is over exposed and as a result you have lost a lot of detail. Secondly, is is not in focus and it is far too small in the frame.
I,m guessing that this was taken in bright sunshine and hence the overexposure - try waiting until the end of day when the sun isnt so strong or taking a cutting and bringing it indoors and using natural light from a window - but not direct sunlight.
The part of the flower that is usually chosen to be pin sharp are the stamens and really when using a macro lens - which you should be - the camera needs mounting on a tripod.
Composition - the flower tends to look lost in all that space on the left and it just looks like its poking into the frame from the side. Try to fill the frame with the flower - because thats what we want to see and bring it in from a corner rather than the side. A lot of space sometimes works - see my pf - but Im not sure it does here.
In my mod I have cropped, rotated through 45 degrees clockwise and then done a heavy sharpening to bring back some of the detail and to show what has been lost.
Hope this is taken in the spirit it is intended