There is probably a quick fix for this, but bear with a newbie.

I downloaded part one of "Pilot Girl" to give it a try. After I added the front image to the polygon plane as the tutorial shows, the image is not straight (the picture is not straight up and down). The lower part of her body is coming out of one side at an angle and the top part of her body is at an angle on the other side of the plane.

I've attached a Jpeg. Can someone tell me what I need to do to to fix this?

Thanks.