I'm going to teach you how to make a Nether Portal in Minecraft. It only works in survival.

First, place 2 obsidian blocks, like so.

Then, place two corner blocks. I used obsidian, but you can use any block.

You build three up in obsidian and again two corner blocks

Then you build two across the top

There you have it, a nether portal

I was on creative, so that's why it didn't work. If you were on survival, it would have worked It would have purple inside..

This is wat it shud look lik