what is a "Your horse here".

My question is the same as the title, what is a 'your horse here' art sale?

Your Horse Here, or Your Character Here, art Sales are generally a Premade pose in a premade background that will be colored as your Horse Character byt the advertising artist. There's many different ways to go about selling these but generally people advertising "Your Horse Here" are selling a single copy of that image with your character and not using the base/pose/background/etc for multiple horses/characters or people. There might be people with different descriptions and rules and ways of selling images advertised as "Your Horse Here", and theoretically all sales and auctions of recolorable art could be called this, but in general it's a single auction that gets tailored to your specific horse/character only.

Thank you very much