The line is impractical, once someone finishes a transaction how exactly would he get out on a crowded line?
ATMs on the left are impractical, they would block the line.
The line can have 3 rows instead of 2 allowing a bigger crowd.
City RPG Bank style, there's no real high-security vault or anything and it's tiny. At the very least it's a bank in a mall or something, but it still seems a bit more tiny than required.
I find the interior kinda interesting, but it's just a personal preference doors not to be on the wall directly, but at least 1 stud away from it on corners.
The flooring could use work, perhaps the queue have a different styling?
The ATMs are interesting, nothing to say there. Love the usage of the 1x1 print brick at the bottom.
The exterior is stereotypical, try to add more variety in colors. The black windows are a nice touch though.