The Franky/London session is a fade or a follow move of the Asian session. See the attached 30M chart from today.
a. The blue background is the Asian session move. It was a down trend.
Now, the London could either fade it or continue the move.
b. The green background candles are the pre-Franky. That is the hour before the Frankfurt opens.
Normally you would get the fake out (false break) of Asian highs or lows as you did today, at the start of Frankfurt or pre-Frankfurt.
If you noticed, it was sort of a fake, meaning it broke the Asian low & then came back inside it. So, I entered at the start of Frankfurt. Once it started to look like a false break.
So, I was essentially fading the Asian session trend.
If I was wrong, the stop would ideally go below the pre-Franky low, it was still a small SL. And you would target till the Asian high or the first opposite signal, or your own profit based targets, whatever your exit strategy it.
In case it was a continuation of the Asian move, the low would just break, and it would continue to move down, I would be stopped out, and would likely take the opposite trade in that situation. Every session follows or fades the previous session's trend.
Note that today, the London was really weak, there was no follow through today. Don't ignore the major options barriers. They act as important levels that price magnets towards. Today, it was really close to 500, so it could easily have gone down, and I would have been stopped out.
Just mark the highs & lows, you will see it.