Here's my second attempt with the newer design, windmill included. There was some weird discoloration in the acid etching process, but I'm unsure if that has to do with the time I left it soaking in the acid, the cheap pot metal coins I bought on Aliexpress, or the fact I was slightly inebriated while making it. I have some genuine brass coins that the first attempt was made on, I'll try that later tonight.
And for those asking, I probably won't be selling these, just a neat personal project I felt like sharing, and the quality I can achieve isn't even close to what minting can, you'd be better off buying the real coins when they're available.