Congratulations. I currently am waiting on a few more submissions. Not in a rush at the moment.
To be honest, this isn't really the ideal way to request a signature. What often happens is that multiple designers spend time creating concepts, drafts, and revisions, only for one person to be selected in the end. That means everyone else has invested their time and effort for nothing.
A better approach is usually to choose a designer whose style you like and then work with that person until the desired result is achieved. That way both sides know what they're committing to, and the designer can focus on refining the project instead of competing against several unfinished drafts.
Because of that, I'm not going to put time into creating a concept for this request. The likelihood is high that either someone else will be chosen or nobody will be chosen at all, and that's generally not a worthwhile investment of time from a designer's perspective. I suspect many other designers feel the same way.
Best of luck with the project, and I hope you find a designer who's a good fit for what you're looking for.