From Grainline Studio:
This add-on for the Archer Button Up pattern allows you to easily convert the button up into a popover and add tower plackets to your sleeves to match! This pattern includes new pattern pieces for the center front, sleeve, and placket pieces so there’s no need to make any pattern changes or draft a thing. As with all of our patterns, clear instructions and illustrations guide you through with ease.
PLEASE NOTE: The Archer Button Up pattern is needed. This is not a complete pattern.
Sizes: 14-32 (for sizes 0-18, click here)