You may use any kind of paper to fold the origami face of Cow. It is a little easier if the front and the back side of the paper are slightly different whether it be in texture or color. Make sure the paper that you use is a square. The paper I am using here is 20cm x 20cm square one. It is a good size for those who are not experienced in paper folding. If you are become familiar with this model. Then you can try smaller size paper.
In Video tutorial, I will show you how to make an origami Standard Cow's Face.