Start with your winter Wonderland fabric and cut 5 inch squares from a light color and a dark/medium color
Carefully measure and cut your square into half triangles
Press seams and press open
Sew 2 squares together to start forming pinwheel (make sure you have your squares in the right places or you won't have a pinwheel!). Make sure to line the seams up nicely too!
Voila! Winter, snowflake, pinwheels!