The photos are both shot at an angle and have some distortion, but my calibrated eyeballs think it looks fine. Camouflage fabric can play tricks on your brain with all the wonky patterns and shapes. If your hem is straight, and you're taking reasonable care to line up that ruler with said hem, then you'll be okay.

I do still owe you a few PM replies. I've been fighting with my internet connection all week, plus work has been crazy, but since today is my Friday I'll get on it tomorrow.