That's a very pretty quilt and I have not seen a single problem with points. Whatever you quilt on the white area will show up more than on the dark, so do what you enjoy doing there, with no worries. The quilting will draw the eye more than the piecing. You could do a little echo quilting around the shapes, or go for something fancier, such as petals. I'm not a big fan of stitch in the ditch, but it's good for certain quilts. My feeling about negative areas like your white is they're ideal to show off some quilting.