Now when taking pictures, it is best to try and get straight on shots, if it is on a table that can be hard, but it will show better where you need to change things, when you are about happy with it, I would print out a picture and stand back and take a look, it will help show blocks that really stand out and which ones don't, you want to sort of blend from one color to another gradually, you don't want any glaring changes unless that is what you are looking for,
Now you can have it laid out either way, usually what is showing at the top and bottom most people put to the sides, but it is a personal prefference, it depends on how much time I have to do the top if I will cut off what is on my sides or not or leave them pointy, the other side of the super 60, it has the 120 degrees that you need for the cuts to fill them in,