You can hide the prompts on your CF Spark Creations so long as you have an All Access Subscription.
Hiding prompts before you publish your image
If your creation has been generated, but not published you can click on the publish dropdown, then select publish and hide prompt as shown below:
Hiding prompts after your image has been published
If your creation has already been published you can switch your prompt to visible to you only by selecting prompt visible only to me as shown below:
Of course, you can always change this setting later on if you wish to show your prompt!
Great! Now your prompt is hidden! If you have any questions, please feel free to contact us on email@example.com.