When people call themselves "prompt engineers" it's only half in jest. Half of generating something good is guiding the program into generating something good. That means knowing the right keywords to get specific styles or effects, a little bit of luck, and sometimes generating a prompt several dozen times and then creating variations from a seed once you find a specific seed that generated something close to what you liked. It's an iterative process and many of the fantastic images you see weren't "first generations" but likely the 20th or so generation after tons of trial and error working around a specific prompt/idea.

I'd recommend keeping a prompt list and finding what does/doesn't work for what you're after. Try shuffling the order of your prompt - the order of the tokens does matter! Repeat a token twice, thrice, hell make a prompt with nothing but the same token repeated 8 times. Play around with it! If you find an image that's very close to what you want - start generating variations of it. Make 20 different variations. Make variations of the variations you like best.

Also the seed is very important! If you find a seed that generated a style you really liked take note of it. That seed will likely generate more things in a similar style for similar enough prompts.

It's a semi-creative process and definitely takes some time investment if you want great results. Sometimes you strike gold and get lucky on your first generation - but that's rare.