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Anime style? I don't know
Realism? try a combination of the following:
take a soft small eraser through he brow line to soften it and break the hardness.
Eyelashes don't come from the eye - there is a little line of skin and then the eyelashes come out above that.
The pupil could be lifted with lots of tine detail - look at your eye in the mirror - it isn't one solid colour is it?
Finally they eye is a very contoured area of he face so it needs shadows and highlights to indicate the folds of skin, the brow, the eyelid and so on.
There are two ways of spreading light: to be the candle or the mirror that reflects it. Edith Wharton