Decision is made or not?

I decided to go for the Fichu  pattern by Fadenidylle and I do not get it.
I think I started the right way:

The triangle is exactly how it is supposed to be, I suppose and then I had to go over to the short rows!
Man, what a strungle!!!
This is what it looks like:

It should look like decreasing instead of staying the same the whole time!
What am I doing wrong?
I want to give up !!!