One thing you can do to help your partnership application stand out is to treat it like an application for a job. What are your qualifications? Where can we find you online? Show us that you know what we’re looking for in partners, and tell us how you stand out among the other applicants. We love clickable links, and personal letters that show us your personality before we even click through to your channel. Your application letter doesn't have to be very creative to be accepted, but if it shows a lack of effort, we may push back to see you invest in your partnership more.
For more information, see: How do I Become a Partner?