New Design in Progress....What do you think?

So here is a teaser pic of an upcoming design I am working on. This so far this is the inner border and my hubby picked out the colors! LOL I think he has pretty good taste! I would not have put black and yellow together on natural but I am really enjoying the outcome.

So this design goes through the months and will be quite sparkly when finished. Do you guys think it needs and outer border?????