Straight out of the box CedarSafe has a few planks cut at different lengths to give you some automatic variations in where the planks meet to set a good pattern. We decided to cut all our planks at center and about a quarter the distance on both ends so we would have a 4 part plank pattern on our side walls.
We had never installed cedar planks before but it was a breeze. All the grooves were perfect and the wood is very easy to cut.
When you start your first planks at the bottom of your wall, make sure to check that your baseboard or floor (if installing behind baseboards) is perfectly level. If it's not and is a little off, draw a line across your wall with a long level to use as a guide for your first row of planks.