If in a dream you receive advance for yet not performed work, then in real life you are expected by salary increase or promotion. If dreamed you that the contractor demands from you payment of advance payment, then you should be ready to the fact that strangers will interfere with the plan developed by you, having destroyed by that what you valued.
Be sure and keep any other thoughts out of your mind before drifting to sleep as a cluttered mind can decrease the chances that you will remember your dreams upon waking. Also, focusing on remembering your dreams upon waking in the morning is another very important thing. This sounds very easy, but is often hard for some to do. Interpret a dream by "dictionary dream of interpretation"
When you very first wake up, simply think about your dreams. Don't allow your mind to drift off to other things, just lay there and think about the things you dreamt about the night before - dictionary dream meaning.