I recently sent out some emails and got the e-verbal "okay" that a few sponsors would be willing to give promoting my blog a go.
I was stoked, but then I realized that there were numerous steps before there was any actual cash in the door.
Over the last week or two, I've spec-ed out custom ads for my site and newsletter, built a custom promote page (https://stephsmith.io/promote), and connected to Stripe for payments.
Today, I woke up to an email from Stripe saying my first advertiser officially deposited $ into my account! It's a small step, but surreal to get the validation that this could grow into an actual income stream.