sharks teeth, idiot proof guide please,

[keep the faith]

Can anyone give me or point me towards an idiot proof guide for doing sharks teeth?

 

[Glider]

Use a damp, stiff body brush, brush all the hair downwards to start with. In these diagrams each new stroke is hatched. Brush towards the tail (except the last stroke near the tail, which is downwards). You can use hairspray afterwards to keep things in place.