

Other than that you should only need your rear view mirror and your side view mirrors when switching lanes. As for me I rarely head check, I only do it if I’m merging onto the highway or if i need to cross multiple lanes at once. Try and hold the position it was in as your checking. You can head check to make sure no one’s in your blind spot and keep your lane by not moving the steering wheel. Do not look at the yellow line or oncoming cars look directly in front of you and you will subconsciously keep your lane. Tip to keep your lane is to look directly ahead in your lane. I still have my permit as well and I’m 17 and always willing to help out a fellow driver. However, you still *need* to check blind spots (and verify it's safe) by doing that same over-the-shoulder glance (so for example, left side blind spot > check over left shoulder in a compact 4-door car, that blind spot is visible out the rear driver-side window (on the rear driver-side door). (Which is why we want to see as little of the side of the car as possible, when adjusting mirrors). The moment you see the vehicle leave the outside edge of the side mirror, it probably entered your blind spot area. This last little bit is important, because. From the outside mirror, that same piece of traffic will then appear bigger and bigger and bigger until you see it leave the outside-most-edge of the mirror you were tracking it from. Observe where each piece of traffic travels upon approaching from teh rear view, then see whether or not it goes into one of the outside mirrors. When you're on the side of the road in a busy (preferably downtown-esque) type of area, and you're situated on a straightened piece of roadway (with your car positioned in the same manner), try this: stay in the drivers seat.

Assuming you already know how to have your mirrors adjusted (basically, side mirrors should have a minimum view of the sides of the car (but also at eye level to how your seating is arranged), as well as the rear view mirror (match it as best as you can to the borders of the rear window, so when you scan it, you do not move your head save for a subtle upward nod):
