Lori, that quilt is beautiful! I am just now doing my first modern quilt - for a young woman I work with. She wants only soft gray and white, and modern seemed the only way to go. I'm going to keep a copy of your quilt to hopefully inspire me when I quilt it....love how you did it.
For ideas, check out Pinterest --- there are some great ideas on there for machine quilting...I'm sure you'll find the perfect way to do it just from looking at the posts.