Really cute. The pattern should be pretty easy, it looks like 1/2 snowball blocks, where the corner triangles are on the small side, like 4" finished squares and 1" finished triangles, with careful fabric placement.
Here's one of many snowball tutorials on the internet. your quilt just has 2 triangles in opposite corners.
http://quilting.about.com/od/quiltpa...us_quilt_3.htm