Ask IH: Critique and monetization options for my site in the art resources niche?

Hi guys!
Thanks to your help before, I redesigned the landing page to simplify it and get emails. I appreciate it!
https://artres.xyz

I have a tumblr following of 26.9k that's helping drive traffic and interest. I've also had some success with fiverr (about $140 net ) with monetization and Amazon affiliates (much less successful).

I also made an idea generator mini app on my site https://artres.xyz/ideas and was wondering if that looks good and adds value?
Do you guys reach out to companies that might be interested in advertising?

I would love more constructive feedback on my site!

Thank you so much for your time.