How about a leaf design, some large some smaller, add a loop or 3. Do some practice pieces first to develop a rythmn, I find it easy flowing. good luck.
I have used this pattern to FMQ. I found that it helped to draw the pattern out first on paper to get the feel of it. I actually used parchment paper (like you use for baking) and traced the pattern out on it, pinned it to my quilt and stitched through the parchment paper then ripped the paper off. This pattern is a good one to begin with because it has lots of easy curves and is forgiving. I would not be able to attempt it free hand however to start out.