This is what I followed to make mine, Cutebuns did a great job.
It starts here
http://www.quiltingboard.com/t-35100-1.htm
Then this is about cutting
http://www.quiltingboard.com/t-35685-1.htm
Then the assembly
http://www.quiltingboard.com/t-36316-1.htm
then layout
http://www.quiltingboard.com/t-36954-1.htm
Give one a go, they are really fun and not as hard as they look