Jerseyrayne

I just finished this wallhanging for my brother whose home is contempary. It is a Thank-you gift. I would like your thoughts on how to fmq it. I don't want it to take away from the design and be too busy. It is a pattern by Elizabeth Long in a Patchwork & Quilting Magazine. I was thinking of stitch in the ditch for the blocks but don't know about the black border. I would appreciate any and all opinions. Thanks