As my dear Medium friend very politely told me when I sent him the first self-scrapped-up version of my bullet journal - "Umm you could definitely do a lot better"

Turns out, hiring a professional designer (my then-gf) and reworking it over months made the final product look night-and-day different from the first draft (Link for those interested in checking it out: https://the-2-minute-bullet-journal.carrd.co/

Another tip here: Try to hire a designer for both the cover and the interior formatting (esp for paperback type books). The homogenity/premiumness will help a lot.