For that vacancy, you could do a row of 9-patch or churn-dash. OR, for the sake of symmetry...you could move the half-square patch one to the right of the first set and then do another identical row of the strip that uses green background. Separate w/ the same white strip. I personally would do narrow sash in the white and use one of the prints for a border. Agree flying geese would be good or prairie points!