Portal Design And Detail

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Introduction
The most important thing in any map is design and detail. This is especially important when making a portal map. A portal map needs to have a good layout, be fun to play, and be visually attractive.
Step 1
The first step I use when making a Portal map is to first design a rough, and simple map. This is generally done with dev textures, and is completed in about 4-5 minutes. At this point, I will thoroughly play test this area, and I will determine what areas will be portable and non portable.
Step 2
I will now detail the areas where portals will be placed. I have moved the top section in and added a hazard texture, and I have shrunk the floor and made it into a platform. I added a BTS scene below this platform with two pistons.
Step 3
Now I add metal textures where players will not be able to place portals on. The metal textures will have standard detail for now. I will play test this section again, and find any glitches.