>>3321216Here's my two cents, if you don't mind me butting in. Nino's bangs start from sligthly above her forehead and spread out.
>>3321162 is actually a good reference: you can see the front part of her hairdo starting from a single point and falling down following the curve of her head (then fall straight down at the forehead).
Small tutorial in pic related:
>choose point slightly above forehead but below the top of the head>draw the contour of the front part of her hairdo (these are on the side of the head and go to cover the ears) with curve lines on the top and straighten them downwards after forehead level>draw bangs bottom line around eyelashes level>draw curving bangs that start from the top point>Nino also has some long hair at the front that cover the ears from the front>draw sidetails from slightly above temple level>draw back hair with curving lines that follow the head just like the front>add ribbons 
