Help Editing, and Frames Ty

iv been playing around with editint a lil bit and i see these frames you can insert to photos
like wanted,afro,sunset beach ect,
i want to line my pictures up to fit inside them i cant figure out to move anything around so i can line them up its all most impossible to have one pic thats thats gonna fit perfect in the center with out having to move it to the center
so is there anyway to move anything around to get it align right?