Just helping one member.
#1 all pieces laid out
2, align edge of triangle along square, corners of triange will overlap. Stitch
3 Press to one side
#1
[ATTACH=CONFIG]244665[/ATTACH]
#2 - sew triangle to square
[ATTACH=CONFIG]244666[/ATTACH]
3 - press toward square
[ATTACH=CONFIG]244667[/ATTACH]
4 - trim off triangle corner to line up with square
[ATTACH=CONFIG]244669[/ATTACH]
5 after trimming
[ATTACH=CONFIG]244670[/ATTACH]
placement of second unit
[ATTACH=CONFIG]244671[/ATTACH]
7- sew second unit to square - pen line added for emphasis
[ATTACH=CONFIG]244672[/ATTACH]
8 - Press to one side
[ATTACH=CONFIG]244674[/ATTACH]
9 -- Trim 1/4 inch from point of square
[ATTACH=CONFIG]244675[/ATTACH]
10 - corner unit finished.
[ATTACH=CONFIG]244676[/ATTACH]