At present, everything is going smoothly together. I am not very familiar with some operational issues. May I change the image of the explosion? I don't know how to modify the orientation of the door, Thanks♪(･ω･)ﾉ

Explosion animations can be changed by editing the Sprites/Effects/Explosion0-Explosion5.png files.
Doors are automatically oriented based on the walls around them. You might need to move a wall further away to get it to face the way you want.