Huff & puff birthday cake

Ingredients

• 2 x 340g packets buttercake mix
• 31cm x 45cm rectangular board
• Butter cream and decoration
• 125 gram softened butter
• 1 1/2 cup (240g) icing (confectioner's sugar)
• 2 tablespoon milk
• pink colouring
• 1 raspberry licorice strap
• 1 pink marshmallow
• 2 red smarties
• 2 red m&ms
• 2 green smarties
• 4 purple smarties
• 5 purple m&ms
• 6 green m&ms
• 3 pink ice-cream wafers
• twinkle sprinkles