was just going thru the magic stack n whack book by bethany reynolds this morning. in the back are some quilting ideas.
one is to do a leaf pattern in background areas. then she shows a sunburst pattern within the star units. she also suggest zig-zag or serpentine in the star units. if you have access to that book you can use the patterns that are included.
i am sure that whatever you choose it will enhance and already beautiful quilt. have fun.