it's already a quilt to be proud of. :P
if you want to make the stars "pop" back out, try quilting around them with a daaaaark blue thread, or one the color of the green in the sashing. quilt almost in the ditch to outline as closely to the stars as possible without having the thread disappear into the seams.
a small blanket stitch in either the dark blue or green might also do the trick.