Hi Shadow,
Welcome to the forum. You'lll get a lot of info here. First of all, the photo of the guy with the lighter colored hair is 70-75%. The darker hair guy is 60-65%. The standard 6" of hair is a lot of hair. It's difficult to estimate the length of hair in those pictures since it's a comb forward style and we can't be sure how far back the hair line goes. It's easiest to just take a tape measure and measure the distance from where your hair line on the hair system will start to the length you want--it will probably be around 5". There's no need to draw arrows with the hair direction on the template for a freestyle order. I'm glad to see that you're labeling the template with the front and back---some customers don't do that and they have to be contacted to verify which end is the front. Good luck!
Regards,
John