CreatePorn review
CreatePorn builds images from styles and tags. Its FAQ describes what you can specify on a free account and how paid access can change both the input and the queue.
From preset tags to a written prompt
The FAQ describes choosing a style and tags, and says Premium adds a custom prompt. It prohibits personal image uploads and deepfakes. That makes the tag set the starting point for a fictional composition.
Paying for priority or for more jobs at once
My Dreams Studio lists a limit on parallel generations for each one-time pack. CreatePorn’s FAQ instead describes a free queue, priority access with All Access, and a Turbo Queue that uses Gems. If a deadline matters, compare queue priority at CreatePorn with parallel capacity at My Dreams Studio.
Anabel’s take
I'd start with tags for a composition I can describe through a few choices. I'd pay for a custom prompt only if I had a visual detail the tags couldn't express.