I prefere this guide on Skarner, but I use normally quints of movementspeed, because this gives much map pressure. And my masteries are 6/21/3, 3 points in utility for movement speed.

Take a look at this as your guide s currently just an accumulation of few explanations and text. You shouldn't just talk about items in the introductory part for instance as you should justify item choices and explain their usage. Talk about how the stages of a game really elapse. Telling people that you will certainly crush everything without providing any more hints and advises isn't enough.