Well, the white pants and shirt were bought, boots also I just made boot covers from faux leather. The jacket was made from cotton-mix (I don't know the name of it), all the straps and belts were made of faux leather and belt buckles. Here's a brief description how we made them: ginger-i.tumblr.com/post/61672…
Little "accessories" (black pieces on the thigh straps, silver pieces on the belt) were made of craft foam, painted or covered with fabric. And the scouting legion emblems on the jacket we made with transfer paper.
You can search patterns for the jacket from the internet.
Aww I love your cosplay! This is the best Petra I've seen so far! ;u; //all dem feels comes back whydidshehavetodieWHY ;___; The wig is perfect as well! ;w; May I ask where you bought it? or is it your real hair? o: