I agree with ragamuffin, it really helps to use your 6" ruler to help things line up better. I starched my fabrics first, that helped make the points nice and crisp as well as the folds. I think your pillow is just beautiful, the colors are gorgeous together! I know I personally just needed a bit of fine tuning and practice.
Here is a tutorial link;
http://www.quiltingboard.com/links-r...t-t114516.html