This is my photomanipulation. I used pixlr.com and picmonkey.com to photomanipulate (These websites are given credit. Thank you two websites). Credits goes to soraneko [link] Here is the stock photo I used here [link]
First of all, I like it that you didn't blacken the whole eye and that there are still some reflections. Now a little crit. There are lighter spots which look a bit like you just forgot to make them all black and also the part over the waterline looks too blurry to me. Next time try to make the border between the eye and the waterline stronger by zooming in and using a smaller brush (or whatever tool you used to blacken it). So you can see the borders and create a realistic looking image.