Thanks again for all the kind words.
To your question Ekis:
I usually start with a new line of planks in the middle. There I check to put the next row with a difference of 4cm to the previous row. this way I ensure that with a plank length of 10cm there is a repition of a plank start every 5 rows.
From the middle I go forward and try not to bend a plank over the length. therefore I have to narrow them and quite often the plank rows start to get short. Due to the fact that I do not want to have a pointed plank I have to use a spilling methode. I prefer the Dutch one over the English.
As you can see I make some compromises and it is not authentic, but I like the look of it.
Not that you will see much after painting, but nice to know anyway.
Someone have posted a very nice picture showing the difference of Dutch and English spilling methode. Not sure in which thread it was.