Halloween graveyard cake

Ingredients

• 3 cups (450g) self-raising flour
• 2 1/2 cups (555g) caster sugar
• 6 eggs, room temperature
• 1 cup (250g) butter, softened and cubed
• 1 cup (250ml) milk
• 1/2 tsp vanilla paste
• 1/2 cup (115g) caster sugar
• 1/2 cup (125ml) milk
• 1/2 cup cocoa
• 1/2 cup (125g) butter
• 2 cups (300g) icing sugar