How to make a nether portal

Ghastly!!!

First you pick any map you want.

Next you get obsidian.

After that you get flint and steel.

After that you build 4 blocks over with obsidian.

Next you build 4 blocks up on one side.

After you do that build 4 blocks up on the other side.

Then you fill it in on the top.

Finally you take the flint and you use it on the obsidian. This is guaranteed to work if you do it correctly.

Enjoy the nether!!!