Those are cute! If they were mine, on the first one with the applique, I'd echo once around the appliques and do a small design in the background to make the appliques pop! Check out Leah Day's website for a multitude of filler designs.
http://www.daystyledesigns.com/365project.htm
On the one with the houses, I'd quilt each area for what it is, grass, sky w/clouds, bricks or such on houses, leaves or branches on the trees, curtains in the windows, smoke from the chimneys, etc.
Have fun!