CAMERA SETTINGS:
MANUAL FOCUS: (click the M on the LENS)
MODE DIAL: TV (stands for Time Value) also know as SHUTTER SPEED
ISO: CHANGE TO 100 (so camera is less sensitive to light)
NUMBER OF SECONDS: START WITH 4" ( make sure its 4 seconds and not .4 seconds) It will have the little symbol after the number.
This is difficult to judge, so needs some experimentation. A good starting point is to carry out a trial run, where you start behind your camera and then run around your scene, illuminating the objects as you go. Time how long it takes you to do this, and then use that as a starting point for your exposure time.