that will help.......
all your parking spots are way too near the terminal so the jetways will not operate,
if you highlight your parking spots, on the top of the spot there is another tiny spot, which we call the handle where you can rotate the spot with it,
this spot gives a rough idea of where the push back tug, baggage cart and baggage loader is, so you can set the position, adjust to suit in the sim,
what will then happen is your spots will be too close to the taxi path,
so wings will hit other aircraft when they use the path, more room is needed
i also notice the building is stretched too much so the textures are distorted,
the option here is to re-size it back to where the textures are neater, then copy the terminal and place it along side the other one to get the length you require, like you have with the four vertical buildings
hope this helps you to be on track