New Seed in Flat World Minecraft 1.8+ by smile

hello!,now we are going to make your seed in you flat world,there are 6 steps.

Steps:

1.click "Create New World",then named your world.

2.next,click gamemode in 2 times then stop in Creative.

3.then click to "More World Options",then click "world type:superflat".

4.click to costumize then click presets.

5.then copy the seed.

6.then click use preset.

Thank you!!