Cone Nebula - Leftovers

In the back of my mind, I have been wondering what to do with the leftovers from the Cone Nebula quilt. As you see, I have these triangles that I cut but didn't need:

On Friday, I got one of the periodic updates that Jan Krentz sends out, and as I was poking around in her blog, I saw this entry. Go look at that link. Do you see what I see? Well, what about this? Well, on Sunday, I tried this

and this

and this

and suddenly saw where I wanted to go. I sewed together the isoceles triangles at their bases, pressed them open, and sewed them together side to side.

and ended up with these:

Now, I'm thinking that if I flip these on their side:

(and switch one of the flowered pieces with one of the bright green pieces), I have the start for a headboard for the bed on which the Cone Nebula will lie. Thank you, Jan!!