Yes, it's a 2+ part process.
1: Print the first target, permit a dry time of 1-4 hrs
2: Read first target, generate the 2nd target
3: Print the 2nd target, repeat the dry time
4: Read the 2nd target, generate the profile
Instead of using 2 letter size sheets of fine paper or canvas do:
Cut the sheet in half, 5.5x8.5, insert in printer sideways__landscape
set the printer to portrait mode, letter size
Set the scale factor to 51% and do steps 1-2
Reinsert the printed target sheet into the printer but flipped 180 degs, do steps 3-4
Use a straightedge ~1/4 thk as guide for careful reading, center the Munki's nose over the row to be read.
I have placed a small strip of tape on the Munki's bottom for a smooth sliding motion.
For further info check my posts and others in DPreview's printer forum
good luck irv weiner