Side doors in RMXP maps ?!, RMXP mapping issue Options

[Jens of Zanicuud]

Hi everyone,
I've a mapping issue and don't know how to solve it.
I'm working on a hospital map and need to put some doors at both sides of a corridor:
 screen.PNG ( 79.05K ) Number of downloads: 27

and on different rooms' walls:
 screen2.PNG ( 96.51K ) Number of downloads: 18

As you can see, the result is kinda crappy. The blue rectangles can't resemble what I call a door.

Have you any ideas on what I can do to improve the side doors design?
Thanks in advance,

Jens