I have written this pattern as a walkthrough of how to corner to corner crochet my instarsia charts. I include lots of tips and tricks you can uses when following my charts and explain the blankets sizes and how to calculate how much of each shade your particular chart will require. 
 
Also includes written instructions for an optional border!
 
I now have a c2c yarn calculator running on my site. You can use it to estimate how much yarn you will need to C2C any instarstia chart for the yarn weight you want to use!
 
Using different size yarns will result in different size blakets. ie 4ply is a lovely size for a baby blanket and chunky would be large enough for a bed. Check the pattern for all sizes.