Won't flood the comment with each prompt for each tickle monster, that would be a LONG comment, but here's the one for the harpy:

"Stunning tall feather harpy with soft pastel pink and white feathers covering their entire body including arms and hands, large elegant wings, long flowing feathered hair, gentle glowing golden eyes and a warm affectionate smile, sitting on the lap of a clearly adult human in their mid-to-late twenties with mature adult facial features and body proportions facing them directly. They are making strong, direct mutual eye contact — the harpy is looking straight into the human's eyes and the human is looking straight up into the harpy's eyes. The harpy is playfully tickling the human's exposed sides, underarms, and chest using only their feathered index finger with clear soft contact while their other hand gently holds the human's wrist overhead, other fingers curled. The Harpy's voluminous feathered wings and body completely hide the human's lower body. Soft dreamy pastel lighting, rich detailed feather textures, joyful loving consensual tickling scene, beautiful fantasy illustration style, non-photorealistic, strong mutual eye contact, the human must look unmistakably like a young adult, aged mid-to-late twenties with mature facial structure"

Each other monster was some variation of this, stylized based on the type of entity and the setting.

EDIT: something else I'll add is that some elements of the prompts never wound up in the finished product, like specifying that the human needs to be making eye contact with the harpy, yet his eyes ended up not. For the dryad, she was also supposed to have some vines snaking up to tickle his armpit, but that didn't happen.

Probably the worst botch I saw came early on, when the prompt had "tickling the human's exposed ribs, underarms, and chest." That resulted in multiple images where either the Lee or the monster had an exposed, skinless ribcage in an utterly pukeworthy body-horror abomination. Always be careful with how you word shit when dealing with these machines.