I absolutely love how much attitude you gave Samus! More often than not, I've typically seen her depicted as the stoic, silent type. But here, it appears you've given her a sense of playfulness that's been sorely missing in other works of her. You've added a new dimension of the character, and she couldn't be any more beautiful for it!
I like the amount of detail you can see on the suit. Most definitely a lot more plausible and natural looking for being worn under a suit of powered armor. The face is definitely well done, and it's clear that more details are planned to help further it.
All in all, loving the design! Hope to see the full thing when you finish!