Need some advice.

You may want to consult with the instructor (who knows how it goes with the road-test examiners in your State), when making a left turn on green light and having oncoming traffic, if they want you to enter the intersection or stay behind the white line.

When I was taking my CDL road test in Phoenix AZ, instructors instructed me to enter the intersection, they said otherwise I would not be able to make a left turn with busy traffic in Phoenix. When I was doing pre-employment road tests with some of the companies I worked for later, some instructors (East Coast) told me I should not enter the intersection on green light to make a left turn if there is oncoming traffic.