Notice that 1 and 2 match at the top and number 3 has more white showing at the top.

In picture two,if you tried to sew them together ,you can see they dont match,even though the squares are the same size..

In picture three, the two "good" ones match at the point.

The way to get perfect points is to make sure your diagonal line is in the proper place.Press them open well...if you use a little triangle square ruler like Els ,the size you want lines up right on the stitching line,and you cut off two sides...

If you use a regular ruler,you have to get the diagonal line right on the line,trim two sides,turn the patch and line it up on the line again and trim the other two sides...

That will leave you with clean quarter inch seams. When you sew them together,press the bottom and top seams in opposite direction,and you can feel and see the center seams snuggle together. They should look like this..

This is info most of us know, but there are newbies who might not. I remember when I couldnt do it and it was so frustrating!!!! Good Luck!!!