Prompting is not always the best solution to describe the image you want to create. Using a sketch may be much easier!
To create a new image from a sketch:
open a project
click on "transfer"
upload your sketch in the initial image box
Choose the input type: ‘Black and White’ (if your sketch has no colors) or ‘Picture’ (if it does).
Increase the influence of your model.
Add any extra details in the Image Description Bar.
click "transfer style" and enjoy great results!