I saw a great tip for adding an accurate seam allowance to a curved seam. Use your 1/4" foot and when your piece is complete, sew around your piece keeping the paper aligned with edge of your foot (unless your foot measures the 1/4"on both sides, this might have to be on the right hand side) then cut where your stitches are, I hope this is as clear as mud, I am a visual person and have a hard time trying to describe things LOL
