I would have to add to this that eyes are hardly ever pure white, its interesting how they never actually are but its typical way of human eye to think or generalise it, thinking its pure white in a same manner as we think that sea is blue and grass is green, however we as artists or should I say God's notice these little nuances of life, things are not what we use to think that they were when we were children.
Oceans has brown, yellow, red, green in them - skin tones are not pink there is also visible hues of orange, violet, green, blue in them, eyes are not white they are darker with hues of blue or red or yellow or green etc
Anyhow your picture is greyscale so those things dont be consairning this (I went to far with my thinkings lol!) I also feel like that the face could be more 3 dimentional, and I would like to see the reference photo or if you were not using photo then at least any photo of youself at all for the reference, more easier to crit or compliment !!!!
look I dont know why I love you I just do