Teal buttercream cake and red sugar peony

This is my first all buttercream cake.. I  exclusively use swiss meringue buttercream for all of my cakes and never american buttercream. It's simply too sweet for my taste.

My customer does not like the taste of fondant so she requested an all buttercream cake. The cake design she wanted could only be achieved with all american buttercream and she was informed of the sweetness of this type of icing.