>>1864313You have issues throughout the entire image. This is normal of first time vectors though.
There are things to consider when working on lineart. For one, make sure all nodes and handles are parallel at all times. If you don't do this, you will get messy and inconsistent lienart that is present in your image. Make sure every node has handles, as it will make it easy to shape a fill. In combination with those, you need to pick a thickness for separate parts of images, like skin, hair, clothes, etc. Pick a thickness for each one, and make sure you match the thickness in each area throughout the entire image.
For the eyes, use the circle tool to keep thickness consistent. For internal lineart like the mouth, and some of the lines in the dress, make sure the thickness is closer to to other lineart in the surrounding area. They can be thinner, but not so much that is clearly obvious. Also, for shapes ending with a single node tip, make sure the transition from thin to thick is consistent. Many tips in the hair are far too thin, and then too thick at the V tips. Make it more gradual to keep thickness consistent. You also want to make sure that all the V tips of the hair curve in a certain direction. If you make them too flat, the hair becomes very dull. For the hands, pay attention to the fingers and how they are shaped. You want the tips to be fairly skinny and thin, as it matches a female character better.
Here are a couple areas that I did for you to compare to yours. Here is the file to look at as well, so you can see how the nodes and handles are placed:
https://mega.nz/#!otpWSbiI!VKXZDr03S0upF3zwQJwB0x0CucLKYT2P5I3kIxpX3kI