In this tutorial we'll cover the creation of a good metal floor.
Floors are pretty easy to make. Alot of people tend to go for the "Add tons of colors, divide up into squares and blend" routine. This is alright. If you want to create a floor that has an actual texture as opposed to just a massive splotch of colors then read on!

Step 1
Load up Wally 1.29H (or whatever version you use). Start a new Quake2 texture with the dimensions of 96x96. Some people prefer to use 128x128 because it gives them more room for detail and they like to build levels where everything is a perfect fit on a 32x32 grid. Theres nothing wrong with that but I find that 96x96 gets the job done faster and you don't lose that much detail.

Step 2
Fill the texture with a dark teal (faded blue).

Step 3
Add noise to the texture (medium) **Monochrome**.

Step 4
Now add some 'borders' around your texture. When I say borders I mean using the darken brush (hollowed rectangle mode) and then the light brush (hollowed rectangle mode) just above it. This creates a sharp bevelled appearance.

Step 5
Go crazy with rivets. Yes you heard me right. Set the pixel gap to 8 and cover your texture with rivets. This is probably one of the few times that this many rivets looks good!

Step 6
Now emboss it. You should select "A little bit" or "least" for this. Make sure you have Monochrome selected.

Step 7
Sharpen the image (least)

Step 8
Take a look at your texture in tiled mode. This texture acts as a panel so you should see one slab repeated. Now you'll want to blend the texture by "Least" to "A little bit" it's really up to you.
If everything has gone well you should end up with something like this (I added some rust to this texture as well).

From here you should adjust the brightness / contrast. Make the texture dark enough so that it doesn't appear as one white texture in Worldcraft / Quake2.
You can go on to add rust, blood, scorch marks...whatever!