Janie--Thanks for the compliments on my quilt. Yes, I use my walking foot with the decorative stitches...as long as your foot has an opening for the needle to go back and forth it will work.
QE--Congrats on the new machine. A D4P will be a good first project. Are you doing squares or rectangles like Mirabelle showed us? Yes I know I have 3 "dishwashers" and they do do dishes, but....
Here are a couple pictures of some of the blocks so you can see the stitching....
I did just two rows on the D4P blocks on middle all the way across. The block where you can see the most stitching is actually one of my extra PC quilts. The last picture is my binding.
I like to use the decorative stitch instead of a straight one when SITD b/c a straight stitch never looks straight enough to me.