I found this website for creating custom Blocks and Slopers: PatternLab The site creates human sized patterns. It will not work if the measurements are too far outside normal human proportions. I multiplied my Msd's measurements by 5 so they would fit within the accepted human size range and then in illustrator I shrunk the pattern. I still had to alter the patterns to get them to fit my doll properly. the website also offers free tutorials on how to edit the patterns on illustrator, which is also handy. Hopefully this is helpful
They’ve made it easier use for dolls,at first it wouldn’t let me input measurements that went beyond normal human proportions, so it still required altering. Now they’ve change the program so it just gives a warning that it’s outside the limits.