Let's begin from the triangle base form. Let's fold the two sharp corners to the direct. In result we have received the model, which I am declined to consider as the base form. Only from the classical models, submitted on the given site, four begin by this way. Besides the given model there is the bishop hat, the turtle and the helmet.

The following some steps are extremely simple and, probably, do not require the special explanations. Just pay attention that on the sixth diafram we do not fold, but only swing the napkin.