If it's to the size you want ... look for a coordinating print that goes with it, to use as the backing and finish it off. Who says this has to be the front and side you see the most? The print backing might be what you look at more!
Or ... if you need it bigger ... again find a coordinating print for the border. Something with the pale/neutral background and then just some flowers, butterflies, birds, animals or whatever, just kind of scattered all over. What I am meaning, with more of the background showing, to help it blend in with your centre blocks.
I know how disappointing it can be, when you get this far and can't convince yourself you like it! Hope you can figure out a way to like it more. Good Luck, SusieQOH!