This was on YT a few weeks back, very good and includes a video for each step of the way.
http://www.yorkietalk.com/forums/yor...cerella02.html
If you need more information you can take a look at my site that includes photos of the tools that I use when I groom my pups. For those summer cuts I use my sister sheers. The key to a great smooth cut is a great pair of sheers (clippers) if you can afford a more expensive pair than you should get them.
Grooming - Dawn's Yorkies Ohio
Have fun !