Defense opening with e4

This opening is really simple and useful, i can still improve it because it looks pretty passive.

knight + castle (possible) var.

simple var.

I don't know if I would agree if I was black.  Doesn't look like black gets any moves for awhile from the diagrams.

Don't try for a "set-up" against whatever the opponent plays.  The game goes move by move, and while you are merrily setting up your formation your opponent may play moves that really mess you up.

Instead, just follow the basic principles on this page, there is advice from several GMs and top writers.