I think she means drawing manga people Batou-chan.
But, i guess i agree with Shiidou-neechan, Keep An Eraser With You At All Times!
I always keep one with me and i'm get gooood results
Well, if you need some tips on manga eyes, here some instructions:
1) Draw in the face guidelines on to you face shape.
") Draw curves from the top eye line to the middle one. then curve in to the bottom eye line. Draw backward "J"'s for the irises. The gaps are drawn on the side where the light is coming from the top right.
There are also a lot of ways to change eyes. You can apply these variations in any style.
The first biig thing to consider is how large the eyes should be. Eye size reveals lots about personality, with bigger eyes often making people look young, cuter, or more innocent. the size of he eyes will also change the shape of the face a little too.
3) Draw in the shines and add the pupils and shadows. (Add more shine if you want.) Draw in the eyebrows (simple slightly curved lines over the eyes).
4)Thicken the outside line of the eyes to shade the pupils and eye socket. You can also draw eyelashes. Draw eyelashes where the eye curves toward the bottom lines. This will make you character look more feminine. Bigger eyelashes makes you character look more feminine>
I hope that helped Ayumi-chan, i'm not an expert about drawing manga, i'm good at drawing it, but not good at saying how to draw it

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Byebye xx