Physics homework help ASAP!

Construct a phasor diagram when ω = 1000 rad/s?
Draw the voltage VR, VL and VC phasors with their tails at the origin of the coordinate system. The orientation and the exact length of your phasors will be graded.
HELP!!!! I have no Idea how to do any of this. My professor never taught us this, onl drew a picture of it