Damn I am salivating to get access to Dall-E for some projects. Been on the waiting list for quite a while.
I've been experimenting with Midjourney, which is amazing for spooky/ethereal artwork, but it struggles with complex prompts and realism.
That said, some styles (Comic book spreads) seem to come out better on Craiyon. And DALLE 2 does not know what a Crungus is.
You definitely have to play around with prompts to get a feel for how it works and to maximize the chance of getting something closer to what you want.
The copyright office claimed works created by a non-human aren't copyrightable at all when they refused Slater, but that was never challenged or decided in court. It's not a slam dunk, since the human had to do something to set up the situation and he did it specifically to maximize the chance of the camera recording a monkey selfie.
If I set up a rube goldberg machine to snap the photo when the wind blows hard enough, how far removed from the final step do I have to get before it's not me owning the result anymore? That's the essence of the case, had it gone to court, probably the essence here too.
My guess is the creativity needed for the prompt would make the output at least a jointly derived work regardless of any assignment disclaimers--pretty sure you can't casually transfer copyright ownership outside a work for hire agreement, only grant licenses--but IANAL and that's just a guess.
It also won't allow uploading images with faces in them.
MJ falls apart when you ask for fine detail. It's a bit of the AI cliche where you have to describe the colour, shape, etc in detail to mold what you want. Asking for a "monkey, gorilla, and chimp riding a bicycle" might have a chimp riding a monkey-gorilla as a bicycle.
Dall E is a lot better with words. It seems to "smooth" some stuff. Like asking for a bone axe will still show regular axes.
But MJ is probably the best choice if you want to do landscapes and stuff, especially horror/dystopian themed.