minecraft jetpack made with command blocks

this map is made with only commandblocks. No add-ons or mods were used. and this seed also has two temples near spawn. the seed, I just typed in: "notch apple". But it is a chainmail chest piece taht you have to hold to use the jetpack, and not hold when wanting to go down. sorry im not that good with command blocks, so i couldnt make it easier to land on survival, but the world is on default gamemode creative. also, i learned to use particles while making this:D