A few questions

How do I
1. Make my own commands (eg W1 floor lower by 150)
2. Make deep water
3. Make own textures (eg purple, black liquid)
4. Make monster statues (not stone, like the real thing mut not moving and not killable)
5. Make a surface that kills you (not transports you to a dark room where (you) are and telefrags yourself,I know how to do that)
Thanks :)

General editing questions that are not directly related to DB should go to http://www.doomworld.com/vb/doom-editing/