Sure thing, you don't even have to credit me if you want. I'm add you so I can message you the link

Or you could send it to me I could just release the update and tag you as a guy who edited the map in the description and the change notes.

Sure, if I knew how to upload things I'd be happy to upload my version.

I actually want the light system because without it some models appear full bright but I'm a beginner noob with mapping so I can give you the .vmf maybe you could do it. I'm not lazy or anything. {LINK REMOVED}http://www.mediafire.com/download/m9scl8s3dsazo0d/gm_item_test+Hammer+Map+Editor+File.zip

Okay, what I would suggest is just to retexture the roof with the tools_2dskybox texture, then just get out the entity tool and place a light_env somewhere. If you wanted to be fancy you could even go to "map properties" up at the top of the screen and type a skybox texture from this site: https://developer.valvesoftware.com/wiki/Sky_List

The main problem with not having a light_env is that then it is hard to distinguish different parts which makes it hard to build.

Again, all of this is just a suggestion to try and help make the map better.

I'm a beginner at mapping so It's too hard for me. Plus I watched a tutorial on YouTube which said I would have to make a skybox with the skybox texture to make light_inviorment work properly which is not necessary for this map because it's a closed map. I tried making a skybox outside of the map but I only wren into more issues like walls disappearing a sky appearing the map getting dark or completely black.

You could at least add an light_env