THRILLER,,filler, spiller....Make a beautifully arranged container plant

I read an article today that says there’s no mystery in making a scrumptious container planting as long as you follow a simple three-ingredient recipe. First and foremost use what they call a “thriller,” a centerpiece plant with star quality, something big, bold, and beautiful in the middle or center if you plan on sitting it next to a wall. Then add a few “fillers,” foliage or flowering plants that will complement but not overwhelm the main player. Finally, add, a “spiller” that just tumbles out of the pot. As long as we use each of those kinds of plants—in various proportions—and take care to balance colors and textures, we are assured we can create a pot as pretty as this. I'm going to try it as soon as I find a pot that big that does not cost an arm and a leg. I heard someone used the inside tub from an old washing machine for a cheap planter...I can see that. Oh, Billy Dear,,,I need your help!.LOL
Here is another example and this one I just love. That is fountain grass in the center,,not sure what the filler is, and the spiller is sweet potato vine. I might give this one a try for sure. Isn't it pretty?