I am attaching a storm at Sea Christmas quilt I made and love. It has the movement you are looking for. Why don't you check out the Gradation batiks from Sew Batik. Then I would consider using two colors (blue and green) plus white or off white and arranging with the two colors like I did mine but starting with the darker Gradation batiks at the bottom left and moving to the lighter parts of the Gradation batiks at the top right. There are a lot of ideas also if you google storm at sea. I must have seen well over 100 in a photo roll. It is a pretty quilt. Enjoy!