STEP 3/4
Spread cream cheese frosting on a completely cooled sheet.
Put another sheet on top of it, apply cream cheese frosting, and repeat. Then, apply a thin layer on the sides and top of the cake with butter cream.
STEP 4/4
I made a color by mixing the red pigment little by little in the remaining butter cream, put it in a piping bag, and squeezed the carnation like this.