I’ve just checked out your 2d work. They are awesome, which is why i’m in disbelief of your concept sketch.
She’s not a very strong design for a contest like this. Right now, those wrists and forearms look deformed, and not very alien like for sure. Her fingers could use a lot more touch ups as well. With what i’ve seen in your demo, you could most certainly do better, even for a fresh start like this.
Good luck.

