The internet has become 3 massive multi-user blogs, each largely consisting of screenshots taken of the other two. This kind of blows, and not just for the usual reasons that may spring to mind.
Images are a terrible medium for online communication! Not everyone online uses a monitor. Any messages contained in a picture is straight up unacceptable without alt-text. It also makes it harder to find and fact check sources, or to spread a thought or idea further than yet another image upload. Copy/pasting text is just plain easier than downloading and uploading.
If you're going through the trouble of creating an image post, take an extra minuite to copy/past (or even transcribe) the source text into the alt-text submission. It's not much, but it goes a ways to improving how we use this blasted network!
https://uxdesign.cc/how-to-write-an-image-description-2f30d3bf5546
https://uxdesign.cc/how-to-write-an-image-description-2f30d3bf5546
This object-action-context method described here is very useful. I'd recommend starting as concise as possible, then adding in key details.
So, for your art piece, maybe start with something like
A figure facing the horizon. A big tiger descends from the sky, threatening the city sprawling between them.If I were to add a few more details, I might do
A figure beside a river, facing the horizon. A big tiger descends from the sky, its tail wrapping around a red sun, threatening the city sprawling between them. A golden trout leaps from the river.And the fact that this is an artistic work is itself context! This means more detail is welcome and helpful!