Quick Tutorial: Air Drop TNT

You can build this to air drop TNT and your enemy will not be able to get to you without bows or anything to shoot with!

You will need:
6 Slime Blocks
2 Redstone Blocks
1 Piston
1 Sticky Piston
If you want your Air Drop Machine not to move, you will also need:
1 Block that won't be moved by pisons (eg Obsidian and Chest)

Step 1:
Place a Piston in the air (can't touch ground).
Step 2:
Then place a Slime Block in the face of the piston and a Redstone Block above the Piston.
Step 3:
Place your one and only Sticky Piston opposite of the pison, facing each other.
Your piston might suddenly move. It's normal to move since you haven't got something to stop it.
Step 4:
Place the rest of Slime Blocks and Redstone as shown in the picture.
Step 5:
Test it with any block by putting it on the bottom of the Sticky Piston. The Redstone Block at the end should move and becomes adjacent to the block for a moment. The machine should move one block forward where the Redstone Block at the end is.
Note:
If you don't wnt this machine to move, simply add the block that can't be moved at the end of the machine.

There you have it-- an easy-built piece of machine is done! You can connect it to a flying machine so it would be easier to use it.
If you like it, favorite it and tell me how I can do better next time!