Listen people. A lot of you have the wrong idea about using freezer paper.
With regular paper, you have the pattern laid out so that you can sew on the lines to join sections. You actually sew right through the paper to get your result. Everyone knows this.
Not so with freezer paper.... Freezer paper is ironed onto the fabric, then you peel it back to the line that you WOULD HAVE sewn on with regular paper. At this point you have the preceding fabric ironed on to the FP and the FP folded back to your sewing line. Using the next fabric under the first, you sew ON THE FABRIC as close to the aforementioned sewing line as you can WITHOUT sewing into the freezer paper. Now, from the edge of that same line that you just sewed, measure 1/4 inch ( or less ) from that FP edge and mark and cut your seam allowance on both fabrics that you just stitched.
Next, open up the pieces and iron down the FP to the last piece you just sewed. Peel the FP back to the next sewing line and do everything again for the next piece.
Now that I have you totally confused, you might want to check out the tutorial that someone has already posted.
www.twiddletails.com and search for freezer paper piecing.