First, model a 1-sheeter featuring credentials and fun facts like any respume.
Just as important as sharing your brand numbers, a short bio can add character to the story you want to create when pitching your content.
Offer a range of content you create to show variety of color palettes, imagery style, and especially images that mirror what you want to create!
Again, stats, bio, and sample images are most important, but do not be afraid to supplement pages with deliverable options, and be sure to create both one-sheet and multi-sheet versions!