if i used some textures from different maps?
Definitely. First I would agree with Kasperg to check out the
Custom Textures tutorial.
Also, as Daub said, you'll need
Wally to open/extract the textures you want from the other wads.
The only thing I can add is:
Donot include the all the textures, from every wad you use! Take the individual
textures only, and put them in
one wad.
If you want to get a little fancy, you can use the
-wadinclude parameter, described in the tutorial. This way, people playing your map won't have to fiddle with more files than necessary.