Coffee in the rain

Few days ago I went out to sketch at the Loyola campus. There are some older buildings with a lot of character and I wanted to practice the use of the proportional divider. As soon as I sat down to sketch, it started raining...oh well... I ws not about to cut my morning short because of that, but instead of architecture, I drew coffee and muffin - in pencil. It was the only thing I had. I added some gouache later.