Family Tree Quilt-Planning Stages

My husband's grandparents are celebrating their 60th wedding anniversary this summer and we wanted to do something special for them.  I wanted to make a family tree quilt representing all of the children, grandchildren, and great-grandchildren in the family. My husband loved the idea and my father in law decided to help by pitching in some money for the materials.

The hardest part is trusting myself to select good fabrics and then draw the tree.  I jumped in this morning, purchased a roll of craft paper and drew the tree.  I cut it out and placed it on my design wall.

It is white on white, so it is hard to see, but you should be able to make out the six branches, one for each child. After I had the tree, I went to fatquartershop.com to select some fabrics.  They are having an awesome sale right now (20% off with a coupon code I found at fabricdonkey.com), plus free shipping on purchases over $40.

I selected Moda Marbles in Green Apple for the leaves that will have embroidery on them.

Then I selected Moda Marbles in Shamrock for the filler leaves.

 Finally, I selected Little Gatherings in Walnut by Moda for the tree.

I am still searching for the background though.  I want a light blue for the sky.  My first choice is a light/blue batik in extra wide (108") so there are no seams and is cheaper than piecing a background.  For the ground, I would like a wildflower or blue bonnet  print to add some color. 

If you have any suggestions I would love to hear them.  I plan to make a trip to one of the local quilt shops in Austin tomorrow to see if I can settle on the backgrounds.