how to quilt it?

So I have completed this cute wall hanging, binded it cuz I thought it was done...but now?

 Not so sure.

Everything is appliqued on there, I got this super cute pattern from the quilt festival. Now all I need to figure out is how to quilt it. What I did on this first is blanket stitch around the words and pumpkins with the batting and backing already put together but now I don't know if I should go thru and quilt the background or leave it the way it is?

...should I leave it or do something on the black background? Should I just stipple it? Or should I go thru with black thread and outline the leaves and letters? 

 I don't know  :(