Ghost and skulls

So, I've been really struggling to come up with ideas for my t-shirt brand. I've been sketching a lot in my notebook but I've also been very frustrated. I've been drawing a lot of ghost and skulls and I tried to develop them into a story. So far I've come up with a idea about this ghost that carries this skull around because the skull has no body. and the ghost can't talk, so the skull does the talking for it. I hope this idea does not exist already ... Ah well, i shouldn't settle with one idea. Going to keep brainstorming more stories. Here are some of the sketches.