Ok, Mark the underapron. This is on the other end. Mark the 1/2 hip plus 15 - 17" for the last pleat mark.

Since you are pleating to the stripe, just start marking each pleat. See Option B: Marking pleats to the stripe. Make sure you mark the pleat number. I do it every five pleats and write the number of the pleat with the chalk.

Let us know how many pleats?