There's a way! It's not at all obvious, but it works. I post art all the time.

I'm typing up instructions now and I'll post them as soon as I finish.

Here we go, quick-n-dirty tutorial: https://oldtoadwoman.dreamwidth.org/tag/tutorial.

It is ridiculously complicated, but when you upload images a lot like I do, you just do it on autopilot without thinking too much about it, though I still curse the "view images" and "manage images" options not being on a single screen.