This craft is very simple and is very easy to compromise if you don't have the things for it.
Step 1: Supplies
For this you will need,
•glass bottle (you can use whatever material plastic or glass but it looks better with glass)
•hot glue and hot glue gun
Step 2: Put some paint and water in the bottle
put as much water and paint that looks right, keep in mind you want the water green but not dark green. Get something to stir it with and stir it until it looks good
Step 3: Put the felt on
Get the felt cut a rectangle and glue it on the bottle.
Note: you may want to glue the bottle cap back on
Step 4: The label
Write Greek Fire on a piece of paper glue it to the bottle and you done!