Back in the days the bowl cut was an attribute of wealth: the wearer could afford to visit a barber. Today it can still save you money but people might not think that you are rich.
Take a picture of your current hair style...
Find a pot, place it on your head. Consider if you really want this haircut.
Tell your friend (who is not a professional hairdresser but a friendly Turk) just to cut off all hair below the rim of the pot. Easy! If you don't have a deep pot: tip it a bit like this.
Half way through: get a charming girl to evaluate... Touch her. Make her smile. Tell her she looks amazing - if she does - and she will tell you the same.
Don't care about the result. Fuck results. Nowadays everything is about results. What about the process? Have fun - you have become a professional hairdresser. Ask to cut your friends hair!