Cut out the roof of the side building and glue in place
Cut out the roof of the mission and fold down the center. If you'd like, you can use a colored pencil to hide the white edge of the paper, as explained on the Tips & Techniques page.
Look for the small grey square on the roof where the cross will be placed. Glue the roof with the cross at the front. Cut out the tiny cross and glue in place. You can strengthen the tiny piece of paper with a drop of super glue, as explained on the Tips & Techniques page.