same here - driver seat needs to be in the centre of the road, The biggest major point is
When approaching an intersection - look out the window closest to the steering wheel because thats where the traffic would be coming from. in a RHD country you approach an intersection and look out the right - good, do not do that in a LHD country - because the traffic would be coming the other way.
For controls - no biggie drive a european car they always have their indicators on the left of the wheel no matter if its RHD or LHD. and the parking brake is a cake to figure out too.
It becomes nature to you - if you follow certain rules thats it.