My Front Door Needs Help

So I can't remember if I showed you another one of my find from a garage sale a few weeks ago. This is the new wreath on the front door. But there's just something missing. I saw mums at Home Depot last week and was thinking maybe some flowers might make it look nicer. There's about three more feet of concrete in front of the mat that you can't see, and bare flower beds beyond that and also to the right. We share a front porch area with the neighbor, so I can't do a lot, and frankly, I tend to kill anything green, so it has to be easy. Anyone have any ideas? I need a cute something to come home to!