Due to your lack of words, I cannot tell if you are asking for C&C. I will give it anyway.
This just isnt sharp. It might have something to do with you having the camera at 200mm, F/18, 1/15". 1/15" is just a tad short to be shooting at 200mm. At F/18, you were also probably experiencing some refraction. This also seems a little underexposed. Either that, or you used entirely back-lighting which is causing a bad shadow on the lime.
Next time, try a little more light on the front of the fruit, bring the aperture down as well as the zoom. This should result in a better-lit, sharper image.
Good luck! :thumbsup:
Mark