Fold the remaining upper left corner down to meet the lower right corner. If you make them in graduated sizes, you can make little mountain ranges in your seamlines or along the outer border of your quilt. Option two involves folding the remaining upper left corner straight down to the lower left corner AND folding the remaining lower right corner back to meet the lower left corner. Prairie points can also be made by folding satin ribbon, in which case you can use either side of it. Add a bead dangle, a bell, a tassel, have 2 prairie points meet with a bow tied, the variations are endless.
Prairie points can be very striking when done in stripes.
An uneven stripe will give you a bunch of prairie points that all look different. To get the effect on the left, you would cut out your square with the left vertical edge halfway into one color and the right vertical edge halfway into the other color. When you fold in the two outer corners to the center of the bottom you will get the colors alternating at the center. You need to press your prairie point firmly and baste it all together. The leftmost corner of the square you will set into one color while the farthest right corner gets set into the other color.