I made (well, it's almost done) a Sue & Sam quilt similar to what Dunster posted, but I actually was thinking that with your gorgeous bright colors, it might do better with a bunch of pale grey, beige, white & ivory fabrics instead of a clear, recognizable pieced pattern. It would create a nice canvas to do some lovely quilting designs while providing a nice backdrop for the applique squares -- great job, by the way, I really love all the details. especially the dog and the flowers. If you keep the other fabrics neutral, your beautiful applique will be able to truly shine in all its glory!