Hi Jonas,
I am going to be a bit less positive. Given your lack of Engineering degree, limited aviation experience and no prior knowledge of aircraft testing, I would think it highly highly unlikely that you would get a job as a flight test engineer.
Certainly none of the major companies are likely to consider you a credible candidate. You may get lucky with a small outfit but it is still a very long shot.
You may be better focussing your energy on reaching your goal in aviation, whatever that may be. If becoming an FTE is your goal, there are many linked threads here to help you work out how to best develop for the role.
I don't want you to waste many hours needlessly.
Good luck in whatever you do.
Typhoid