Stitch the other two point units to either side of the four Patch butting the center seam and ensuring your seam passes over the point where your other two seams meet as shown.(As indicated in red on Pics 6a&b)
Press seams towards four Patch
Pic 6a
[ATTACH=CONFIG]13088[/ATTACH]
Pic 6b
[ATTACH=CONFIG]36269[/ATTACH]