Things not to do!!!!!
Pay up front
Think that you are better than the ground engineers because you are a pilot.
Think that if the RAF/BA do it that way it is the best way for you.
Think that passing the ATPL exams teaches you the first thing about practical flying.
Think that passing the ATPL technical exams letts you speak to the engineers on equal terms.
Pi$$ off crewing.
Think that your affair with a hostie will stay secret for more that five seconds.
Think that a licence means that the industry will give you a job.
And just in case you missed it the first time PAY UP FRONT !!!!!!.