You've not read the entire thread and decided to answer with some wise words which actually hurt and have bought back some horrendous memories.I'm sorry you've had such a poor experience in the past at academy courses as a model.
I've often gone but with the idea that I'm happy for a big change, so I'm good in an advanced class.
If you feel nervous then opt for a classic style/class.
It's not really fair to ask anyone for a complete restyle And to be scared of too much of a change.
I understand that you've taken a picture in the past, but the picture wasnt actually what you wanted- it was shorter.
I suggest you go to a local salon that's been recommended to you by at least 3 people who have hair similar to you- that have a look you like- and ask for a consultation with a stylist that 'enjoys cutting longer hair'.
Sit down with them and show them what you want. Actually what you want, a collection of several photos if need be.
Ask if that's possible with your hair. Then listen to their answer. Ask more questions if you need to about styling, upkeep, possible areas for concern etc.
Hopefully that stylist will be the right person for you, but if not ask for a second opinion from another stylist or at another salon.
But give people a chance to get to know you and to understand you.
Please dont present a busy person with an inaccurate look and hope they'll perform the work of hair expert, counsellor and fashion stylist in 45 mins.
Good luck mate
In the future, don't.