Marketing my MVP

My very first product is now live. Sounds like a great story right? Well... there's no users... yet! Now it's an MVP, targeting UX designers and product managers. And so far I've been reaching out to individuals, asking for feedback and it's been very positive so far. The product is a collection of user flow recordings with screenshots making it a great resource for a quick idea validation or research process. The question is... What are some ways of marketing product like that these days? Bare in mind it's still in an MVP state, changing and expanding daily. https://userflows.co.uk