Nice idea. Is the main subject supposed to be Yogi or the ghost? Some additional separation would clarify, although color separation with Yogi might be a challenge. The background seems to suffer from oversharpening / overprocessing, try moving the figures further away from the background for some DOF separation.
I think this might have worked better if you left out the ghost and kept more color so Yogi stood out as being really different. Or left Yogi out and kept the ghost. An even tighter focus on your "alone" subject would also help.
Nice concept for the title. Just wish it weren't so small. The colors are kind of strange, too, and make everything blend together instead of having the bear stand out. Is that Yogi Bear? :)