>>1854745>8000x4501Might want to get that fixed.
Not bad. Here are some things to consider.
Any time you're working with fingernails or toenails, do not create the outer outline, and then place lines internally to create the fingernail/toenail. It looks unnatural and unrealistic. You want to draw the toenail/fingernail as its own shape that the toe/finger goes into. You're also using too many nodes in your toes and making them lumpy. Try to only place nodes at major curves and use the handles as best you can before adding another pair. The other issue is that many of your internal lineart is significantly thinner than the outer lineart. You can make internal lineart thinner than the outer, but many are too thin, and there are conflicting internal lineart elsewhere that is much thicker (ie. differences between the shirt line thicknesses). Pick a thickness for the lineart and try to match it within each area a bit better.
The lineart for the eyes are very messy. You want to use the circle tool to create the shape of the eye so you can keep it smooth and consistent. You can then hide the outer parts with clipping masks or compound shapes. When connecting the white to the upper and bottom eyelash, try to get the two to flow properly. You want the white to curve, and the lineart to curve with it. I would draw the white first, and then conform the lineart to it. Make sure to use Smart Guides (Ctrl+U in Illustrator) so you can easily snap the tips of the lineart to the white. If you're using Inkscape then you will have to do it manually instead.
Your gradients for the hair, eyes, and background all suffer from the stops of the colors being too close to each other. Try to spread the colors more gradually so that we don't see that hard transition between the 2-3 different colors.
