When I've done them, I've just done diagonal lines a few inches apart in both directions. They require machine quilting - which I normally do not do - so my skills are very limited. They look just peachy. As long as they are reasonably heavily quilted to hold up to the daily washings when in the hospital, it will be fine. Trust me, the kids that are the recipients aren't going to notice. QFK's is an extremely grateful group and none of the volunteers there are going to be judgmental either.