When you are trying to knit colors horizontally do you have to cross the colors or are you always going to do it vertically? Also how do you make the color slants and patterns (like the example of fair isle in the video)?
Thank you for any help!!
Fair Isle and Intarsia are two different things so you should probably check the intarsia video. If that doesn’t help come on back and ask again. 
http://www.knittinghelp.com/videos/advanced-techniques