The lighting doesn't make sense, at all... where are your midtones?
Where's the light source coming from? All of the hair (left and right sides) has highlights, yet only her right shoulder has some sort of ovular highlight. Her left shoulder does not, which doesn't agree with the lighting hitting her hair on her left side.
Her clothes also don't make sense with the wrinkles.
You should probably invest time into learning how to add value, rather than throwing your highs/midtones/shadows wherever you feel like for no reason.
You don't lose the ability to draw, if your proportions are off, fix them. If you cannot, there is an issue with your knowledge of anatomy, and has nothing to do with rust. Drawing something you know is wrong isn't going to improve anything.