are you making it pp or cutting fabric to size then sewing? I have not pp. how are you doing it? I would make the side pieces with the triangles first and then sew them to the squares. like the center square gets two triangle-rectangle side pieces attached then the other two side triangle-rectangle side pieces get the corner squares put on it and then you sew the side pieces to the center piece making sure you are lining up the side pieces to the center square. does that make since? you just have to sit and think it out sometimes. one day I re-sewed the same block 5 times before I got it right. hope this makes since.