Hi Martin
I started off very much in the same way as yourself and I suspect most people do likewise.
I have yet to meet 'anyone' who decided, at school, that they would be a cleaner by choice...it would seem that we have all drifted into the profession.
I have learned most of my lessons either the hard way or listening to others mistakes.
Decide what you want to do, research and cost your requirements, be realistic.
A little story..... A friend of mine had an old Sherpa van, it was yellow (ish) and rust coloured. We talked him into buying a newer second hand Transit which he reluctantly did after much persuasion.
The response he got from his existing customers was eye opening, with comments like "You've finally got rid of that old van then".
Have a good clean signwritten van (clean inside as well as out and of course tidy.... can you resist not looking into a van which has an open door...of course not)
Have good clean kit, get yourself a uniform of some kind (Alexandras).... You will begin to feel more confident and this will, in turn, give your customers confidence in you.
Training...important...as the NCCA says you 'should treat training as an investment NOT an expense'
I hope that this helps
Kind regards
Derek