Blind sides are always going to be harder than on own side, assuming equal room on both sides and the reverse being the same angle if approached from either direction.
Sometimes the blind side is easier, there might be a bit of a gap opposite that you can use to make it an oblique reverse on the blind side, where on the drivers side there is no such convenient maneuvering point, no two reverses are the same, each one should be judged on its merits.
The problem with blind siding is that unless the tractor has a back window to look down the ns of the trailer, rare now (stupid for vehicles that are going into tight spaces regularly not to be properly specced, but remember vehicles are designed and bought/rented/leased by people who never had a clue or have forgetten about using them at the sharp end), the entire reverse is going to be on the mirrors so everything will be in convex vision.
Before you do anything you must have mirrors set up correctly, the main mirrors are obvious, the top edge of the mirror the top of the back of the trailer should just be visible, this will give you large field of vision right down to the drive axle tyres…seeing where the tyres are on the ground is most important.
The wide angle mirror is not for spotting magpies in the trees, it is your blind spot mirror, it needs to be set as wide as possible and quite low, you should be able to see the second steer axle tyre and the ground beside it, generally if correctly set the top edge will only show about half way up the trailer…setting like this is also good for cyclist spotting etc.
This applies both sides of the vehicle.
The over the passenger door down mirror wants to be as far out as possible, you only need to see the edge of the vehicle, also set if slightly back so it overlaps the view from the wide angle mirror.
The front down mirror, you should be able to see about 6ft out from the whole front, and about the same up the nearside, again so it overlaps the door down mirror view.
OK?
Step one, windows and mirrors spotlessly clean, anything less and you are already losing.
Step two the line you take for a blind side reverse is the same as it would be on own side.
Step three as the trailer starts to approach the gap you will not have a clue where the OSR corner of the trailer is, so on the blind side you might be in and out of the cab several times to double check positioning.
Step 4 by now you will have lost sight of where you are going because the angle of tractor to trailer means you will have lost vision in the main mirrors, you will have vision still in the wide angle mirror but it will be too convex for accurate viewing, so you must move the main mirror out as the angle changes…not this takes a bit of thought, cos as the angle changes you tend to move the mirror the wrong way, don’t worry i still do that sometimes and i’ve been doing this what seems like forever 
Step 4 as the trailer enters the gap, you will have to sraighten up, cos otherwise the trailer will continue on its curve, sending the NSR into the gap to the left and possibly the OSF into the gap to the right, so again you might be out and have look see where you are.
With a bit of luck now a slight shunt to correct any oversteers and you’ll be somewhere near straight.
Anyway, you only passed your test yesterday, it’ll take bloody months to perfect any of your maneuvers so don’t be hard on yourself 
anywa some people can’t be arsed to practice or learn and they never get it.
What you do is practice all of this where you can’t do any damage, a lot of practice, so on your travels, go into a service area or lorry park every day or twice a day, select a marked bay out of harms way and practice all your maneuvers into that bay, both sides on mirrors head out the window, any way you like cos no two drivers do this the same and you need to find the method that suits you.
Marked bays are best, and this is why mirror settings are so important, because the position of your tyres in relation to the bay markings makes your reverses miles easier than trying to judge where you are otherwise.
Never use the easy drive in drive out parking bays, even when you’ve been doing this job years you still need regular practice, i choose a blind side regularly when suitable in order to keep my own eye in, use it or lose it applies here.
Take no bloody notice of any monkeys pointing and taking the ■■■■.
Never be afraid to ask for help, you’ll find most proper lorry drivers would be glad to watch the arse end for you, especially if its their lorry in the firing line 
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