Marble cake

I was given last minute notice to go for an outstation job. This is my 1st journey for this year, thus I appreciate it very much though is not a holiday hehehhee. Somehow, can board on a plane is a happy thing to me. So I receive an order to make my colleague cakes, she loves choc cake and butter cake. To combine her taste, I bake this marble cake. Good in the texture but quite dry.