THANKS everyone for your advice. I've decided to cross hatch by machine. I have 2 trigger fingers on right hand, 1 on left ... so I just can't handle much hand quilting.
If I cross hatch in the corners, and then connect with a straight line between them (top to bottom and side to side), then it will give the impression of a soft picture frame around each one. I'll use tread that will blend in with background so it won't detract from the embroidery.
Also, my machine has a "quilting" stitch, and by increasing the length, it will give a softer appearance.
Will hold off laundering until after completed. And no, it's not that bad. Probably some dead bug residue (brown spots). Will post pictures in a few days. Recovering from surgery so have to go at a slower pace now.
Thanks again.... and stay tuned .....