Problem with tnt episode 3 sky

[iHaveToPee]

Hey,
I attempt to add the tnt episode 3 sky as the sky for my hellish episode, I know that this sky contains 4 patches and here the problem starts.

I edited sky3 to 1024x128 in order that I'll be able to put the 4 patches, however I have no idea how to add them (i'm using XWE).
Once I change the number of patches from 1 to 4 nothing happens so I have no idea how to continue.

[EarthQuake]

You need to add the patches to PNAMES before you go messing with with the sky texture in TEXTURE1.

[iHaveToPee]

I see them in Pnames however once I go to textures1 I can't change the number of patches of sky3 from 1 to 4, I only managed to edit the size from 256 to 1024.

[EarthQuake]

There is a sub menu that pops up in the menubar when you are viewing a TEXTURE1 lump. From that menu you want to "Add Patch" for each one, then fill in each patch's properties to construct the entire texture.