Step 1: Purchase a sewing pattern
Step 2: Cut out pattern pieces
Lay the tulle pattern pieces 21-24 (for the top of the dress) on top of the right side of the satin pattern pieces and stitch them togther (or pin). Continue sewing as if the two layers were one pattern piece.
Do not stitch the two layers of the skirt together yet.
Step 3: Cut out the slit in the front of the tulle skirt
Step 4: Cut out the "curve" in the front of the tulle skirt
Once you have the right shape drawn, cut it out from the paper, fold it lenghtwise and lay it on the folded tulle, about 3 cm beneath the slit you just cut. Pin it and cut it out.
Sew on the trimming around the edge of the slit, then stitch the two skirt layers together and handle them as one layer in the following sewing process. Sew the dress using the instructions from the burda style pattern.
Step 6: Sew the dress
Hang the dress on a hanger and cut the train (the tulle layer of the skirt) in a nice round shape.