Click here for a picture. Note: It's kinda big :-).
Using a tiny zig-zag stich and a small needle (size 9 worked best for me), zig-zag the lace to the fabric. I was surprised how inconspicous the stitching was. I used a regular, all-purpose foot and just eye-balled everthing, but it still looked great!) Once the lace is on, turn to the wrong side of the slip and clip away the excess batiste fabric.