Hey!!, green eyes are your asset. People die to have green or blue eyes. Don't feel that you can not apply eye make up. Many beauty queens have green, blue or grey eyes. And all of them look so stunning. You are young and not allowed to apply much make up on your eyes. But believe me you can try out different colors of eye shadow for your eyes, once you grow up.
As for as your query about eyeliner or mascara is concerned then I tell you that both of them are equally important for complete eye make up. Although, if you have to choose one then I would recommend you to go for eyeliner. But don't use it inside your eye. Apply it on your upper eyelid. Because for green eyes you'll have to be very particular if you are using eyeliner inside your eye. But you have to be selective when you are using eyeliner. If your mom allows you then you can also try out eyeliner as well as mascara. They give a finished look. As far as color of eyeliner is concerned, you can try out navy blue, black, brown or dark green. Don't hesitate to use these colors . They will definitely suit your eyes. Try them out and see the difference!!
