Chernoff face for iris data

I want to design an algorithm to visualize iris data set though Chernoff face. I already got iris data set from this link (<http://archive.ics.uci.edu/ml/machine-learning-databases/iris/iris.data>) and import them into Matlab. But I don't have any idea how I continue the next step.

Can you give me tips how to visualize it and tell me each step which I will do. I appreciate if you help me. Thanks.