Mix 500g butter and sugar together until it's fluffy

Sieve the flour into another bowl and add your baking powder, salt, preservative,milk flavor and mix very well

Whisk your eggs very well in another bowl

Now add your whisk egg to your fluffy butter (that is your already mixed butter and sugar) and mix it together very well. Add all your liquid flavor to it

Pour your flour gradually inside (step 4),add your liquid milk and mix it very well till it's thoroughly mixed

Greese your baking pan with butter and flour

Then pour your mixture into your grease baking pan and bake

The decorating aspect

Sieve the icing sugar inside a bowl, add your butter and mix it very well

Cover your cake with the icing sugar and start your decoration

End result