The quarter inch foot with a flange always hooks on my pins and twists my fabric so I don't use it. I cant see the edge of my foot and the edge of my fabric at the same time so I only use my skinny straight foot with a single hole throat plate. I starch my fabric before cutting and use my accuquilt cutting machine where possible if i want a perfect block. For those bias HST, I always cut larger and trim to size when done after pressing. For perfect points, I use a drop of elmer's school glue. If I am making a miniature quilt where the pieces are like 1/2" squares, I measure the fabric and mark the sewing lines and ignore the seam allowances altogether.