Try it on a smaller piece first - such as crib size. That way you don't have too much bulk to handle under your machine. I am teaching a friend at work how to quilt right now and she made a crib-size triple rail fence. Instead of Stitch-in-the-ditch, I suggested that she sew down each seam line using the foot as a guide along the seam. She did that on each side and she has a lovely grid pattern going. She is so proud of this accomplishment - as she should be. Saturday we are meeting up so she can learn the binding.
You can do this too. Don't make it too complicated. We all started at that point.