Texture Tiliing

New Friday, new assignment! This time we're learning how to create textures and materials to use in our game. I started by creating a tile-able texture, for this i'm following this handy tutorial:
http://onlinedesignteacher.blogspot.ie/2013/02/how-to-create-seamless-texture-tileable.html

I am currently in the process of cloning the textures and it is very time consuming. This is what I got so far:

Cloning stage