I found a blog called Raise the Bar and the challenge is called "URL"ooking Good. For this you have to make a card based on your blog. I hope that you can tell from this that I have based it on my Blog Header.
I just happened to have a paper which is exactly the same as the sky background for my header, which helped enormously, that and the fact that the flowers were fairly fundamental and I found a little stamp in my stash that was close.
So there it is!