good job! you are good in using the blur effect too.
I would also suggest working with a smaller canvas, half or even quarter the current size to make the drawing look more like pixel art. As for shading, try to go either "redder" or "bluer" in shades, instead of going "blacker" directly. not sure if that made any sense! Good job and keep it up
Directly recognised her as Luka : )
The eyes are well done!
Though the weak spot is the "03" for me. It looks not like it would be a tattoo since it ignores the skin's shape. Additionally, the AA on it is not that recogniseable.
It leads up to this colour manage issue: http://yanrishatum.ru/pj/?input=http%3A%2F%2Fpixeljoint.com%2Fpixelart%2F106090.htm
It lists 62 colours of which are not even many visible : o Hover over a colour in the table to see where it's located on your piece (will be marked red).
If you have any further questions, feel free to ask me here or via private message : )
Good job on this piece either way! Definitely keep it up!
What Lake said + cute!