I've only played Metroid Other M and Super Metroid; the piece captures the fierceness in her eyes and her posture, with a trim physique one would find in the perfect art model. Her eyes and lips are very feminine, but her nose makes her look somewhat childish.
Samus is in full force here with your drawing. Really like this drawing. Very sexy, but also has the fierceness that Samus has that we usually can't see, from when she is wearing the suit all the time. Definitely don't see the melodramatic version from Other M .