I've been staring at the design wall for ages deciding on how to take things further, but before starting the filling in, thought I had better finish the words first.
So I sewed up a blue storm yesterday and got them done.
I think I'm going to reorganise the blue's, but am pleased with it. My favourite letters are the D in "world", the l in the last "blue" and, drum roll Tonya please, look at that S! I've finally cracked that little beastie!

For the filling in, I wondered about hearts, trees (I think no because they will detract from the words), houses, free pieced flowers, or alternatively putting blue borders round the words with the light background, filling in with white/cream, and putting a really jazzy/scrappy blue border round the whole thing.
I don't really want to make the length any bigger - it is already 38 inches long!