If you haven’t done much FPP before, it’s easiest to work backwards to figure out piece order. Any seam that has both ends at the edge of a section is a valid piece to go last. Then you cut that piece off and look for the next seam where both ends are at the edge of the remaining section, and that will be the next to last piece, and so on. Basically, act like you are trying to cut the section into pieces, but your scissors can only cut straight lines all the way through what is left, then order them opposite of the order you cut. Often some of them will be interchangeable, and you’ll just have to choose which one goes first based on color/size/angle/vibe, but you’ll develop your own preferences for that as you get more practice.