Issues surrounding the checkride were put to me like this:
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You've already proven that you are a competent and safe pilot. No instructor would have let you take an airplane off on a solo trip if you weren't. You're not going to be asked to do anything you've not already done successfully in the past.
The only thing that the checkride really does is remove the need for you to be supervised by an instructor prior to each of your solo flights - its just the final stage in transferring primary decision making from an instructor, to you.
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As long as you remember your stuff, there's nothing much more to it than that. I won't wish you good luck because you don't need luck - you just need to do it like you've done it many times before.
Best wishes and I hope it goes well.
Andy