That's where things get tricky.
The arm position I have in mind is closed rather than their open-armed stance, which is a much rarer find. Even the singular manga reference I found (it turns out searching for manga results is harder) doesn't have it be that way. I mean, I guess I could alter the stance she's in to fit (it's just a change in the arms), but I like the hands in front for her entrance since it helps convey a bit of a message before the comic itself tells you the page after.
And I only got two good references for the close-armed stance: one of which is only two, separated, halves, the other of which is the wrong gender and angle and has boxing gloves. (Mind you, the gender issue applies for the entry images I got which're, unsurprisingly, all male, but that's an easy fix.)
It's gonna be tricky, but I can do it.
It's 5:45. I'm getting a little bit tired.