The pattern. I traced off a size 10 in the shoulders going out to the 12 on the side seams. No other adjustments were necessary.
On the neck facing I didn't press under 1.5cm and slip stitch to neckband seam as was written in the instructions I just left it flat and ditch stiched through the neckband seam. There would have been too much bulk for me if I did it as per the instructions. I don't know if I will ever make this dress again but I am very happy with the one I have.
M6035 has been traced and cut out in a cream cotton ready to be sewn as time permits.