Background Pony #0902
Artist was one DuckDuckGo search away: Kaaya (@toxicotine on Twitter). Has the same signature as seen on this pic. That Twitter also lists other pages.
- https://xcancel.com/toxicotine
- https://www.instagram.com/nurse_kaaya/ (but Instagram says profile page is not available)
- https://www.fiverr.com/s/QGBl0R