How can fix this?

I know many will say “This is the wrong category”, simply i’ve not found the mapping questions. Well, continue.

I am making a deathmatch map for a Black Mesa, But i have a issue. I don’t know make backgrounds like the official Black Mesa multiplayer maps. First the images and next, the game.
Can help me? ?( ?( ?(

Moved to correct section…

Alright.

Try page 5 of this guide.

Thanks, That worked.

Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.