Updates for today.
I have done rexington airport.
Let's have a sneek peek .

There is a funny error when i pressed escape and jumped to the
next station

The first picture:
I see that you've just used some Harbourvale Line/Airport
Express Line/North West Line objects. Just note that you need to
credit RouteBuilder's library of free
objects.
The objects do not belong under me, so don't attempt to credit
me.
The second picture:
I think it's because your HHPSDs only open when the left doors
of the train doors open.