A bit more on the extreme end in my book due to the heavy use of ink, which would likely cost more in printing, this is the first concept I've created for letterhead on my college project for branding of the company of my choice.
Pulling together the brand, the top of the page has the logo of the company, while the bottom includes the outlined effect, as well as the 'heartbeat' with the 'heart' indicator, from the logo. The address would be left white within the bottom field, which would be largely focused upon due to the dark ink.
Upon review, the issue with this version in my mind would be the black on the bottom of the page, even with type, would bring the eye to the bottom with the actual content being skipped. This is something I feel needs revised, but I feel like I want to keep something similar to this style since it would hold to the brand, as well as is rather signature vs. a bland paperhead with a simple logo and address added.