I really think you should take better, straight on reference pictures, as I do not think you look like this.

The wide open eyes look scary, in a relaxed position you would not see the whole iris, but the top off it would be covered by the top lid a bit.
The ears also look quite unnatural and kinda invented.
You have a good base, and the resolution is high enough to pull off nice dither styles with just 2 colours, but I think you should use reference a bit more, because the structure is clearly lacking and it seems to be mostly due to lazyness.