The contouring I've already been working on and trying. (Since I plan to cosplay guys.) But I never dared to go too strong on the eyebrows (only gently making them a little thicker), my mother thought it be nice to have someone do it professionally for a picture when I was 16... I never wanted to look like that ever again... I looked like a clown, my eyebrows especially. Though I will try (as Nezumi does not have very thick brows, so maybe it doesn't look that weird if I darken them more) and I'll definitely try extending the line with the eyeliner. Try around there.
And thanks for the tips. It already helps a lot to know where to try around. ^^