It can either be very hard or very easy when building homemade fireworks. First you need to gather all the needed supplies. Supplies can be anything laying around your house or you can go buy the supplies. Here is a way to make a firecracker. Get two strips of a toy gun caps, place them on a piece of paper. Poke holes into back of the gun caps to get the powder out of them. Fold the powder and a
. fuse up in paper and make it tight. Then tightly wrap it all up with duct tape. Then light it and watch the fireworks. You can find more information here: http://www.skepticfiles.org/new/213doc.htm