How do you make a part which fall slowly,spinning and also loopable?(Falling in a same spot)

I'm trying to make a leaves falling from the tree.. I really appreciate if you help me,Thank you.

Ok first of all you need to declare some variables:

local tree = game.Workspace.YourTree -- Change the tree's path to your current one
local minSec = 0.6 -- The minimum seconds between the last falling and the next one
local maxSec = 3 -- The maximum seconds between the last falling and the next one

Ok, what does this means? treethis is the instance of your tree model, read the commend for more info :D minSec ok so this is a little hard for me to explain, I'm italian that's why, think this:

leaf1
leaf2
leaf3

the leaf1 will fall down from the tree
now,  a "math.random()" will get a random number between the minSec and the maxSec
let's think that the random number is "3" ok?
when the leaf1 falls, it waits 3 seconds before the leaf2 will fall.

I hope you understand =)

maxSecsame as over

Ok now that we have the variables we need to make a function that will causes the leaves fall:

function startLeavesFalling()
	-- Add here your vector3 starting position, I suggest you to start the falling at the top of the tree ;)
	local startingPosition = {}
	-- The leaf will be cloned, we suppose that we want infinte leaves ok?
	local leaf = tree.StockParts.Leaf:Clone()
	-- We declared a random second between minSec and maxSec for better reality
	local randomSec = math.random(minSec, maxSec)
	leaf.Parent = tree -- There will be spawned the leaf =)
	leaf.Name = "Leaf"
	-- The leaf will be spawned in a random position from our array of starting positions
	leaf.Position = startingPosition[math.random(1, #startingPosition)]
	wait(randomSec) -- We wait the random second before we start another leaf falling event
	leaf:Destroy() -- We destroy the leaf after another one has spawned, causing no lag =)
end

After that we need to call the function, call it wherever you want by using this code:

startLeavesFalling()

I hope you understand :D