Well that is sometimes part bluff .. they get stuff to make you look bad .. but you can get stuff written down that makes you look good!
They consider what they think will get results as far as charges go ... so they can and do change charges along the way.
Seriously, a solicitor will help you for free .. with a chat. Ask for the best Legal Aid place in town, go there and ask for 10 minutes chat about the case in the lobby! Tell them what you're scared about. They may be active as a duty solicitor in the court .. so they may help you there for free, too!
Worst is, they can say no, and you can go somewhere else.
Be polite and calm with them, dress ok, smile, and take a few notes. : )
Most of all .. remember .. they've seen it all before! Your stuff won't be new.