Might I ask what prompt you used to get the pie to cover the whole face? I find it often either applies too little because it wants to show facial expression or too much and the head is just a blob of cream.
It was the following prompt or something similar although I think the main reason for it's success was using Messg's flux_gunge_v1 LORA for flux.
Create wide angle image of a man wearing jeans and a white button down shirt, his entire face is covered with gooey dripping whipped cream pie, a young woman on the left in a shiny black latex black catsuit has her hand on the man's face. Another young woman in shiny black leather is holding a pie in each hand laughing and looking at the man, the man is wearing jeans and a white button down shirt