'There are no endings, only beginnings' ... so don't think of the extreme of the forms as the end of the previous movement, so much as the beginning of the next movement.
'Of course if you are always thinking about your breathing, you will have difficulty with it' ... rather focus on the physical form, especially shoulders down, and the breathing will fall into place.
Shooting Tiger is a 5-point stretch: the elbows, the two knees, the head up.