The quilt is great - as for quilting it, I always choose the simplest plan until I was comfortable with something more complicated.

Nice job, I love the black and white background then the yellow just pops. I would stitch in the ditch on the diagonal lines, I like the idea of using grey thread.

You made a wonderful 4th quilt

Agree with Prism ... I think wavy lines in the center of the orange square, and again in a diamond around the orange square extending to the edge of the B&W block.

Some machines have a setting for a wavy line and if you set the stitch length to the longest setting you'll get a nice long wave and all you really have to do is sew a straight line with a walking foot. Easy!!

Your quilt is awesome!

It's oh so very beautiful!

The pattern is Split Decision in the magazine McCall's Quick Quilts in the June/July 2012 issue. I actually really like the wavy lines idea, I found this and fell in love with it:

http://www.freshlypieced.com/2011/01...-quilting.html

However, I don't have a wavy line setting on my machine! The closest thing I have is a zig zag stitch, which is close but not exactly what I want :( I wish I had a more advanced machine!

I really like your quilt. Good luck with the quilting.

What stitches are available on your machine?
 

What stitches are available on your machine. I have one that if you increase the stitch length it will make a wavy line like what is in that picture.

Brother XL2600i stitch options
 

Here's a picture of the stitch options my machine has. I've been messing around with #6 to try and get a wavy line but it just zig zags.