For I loop for parts acting weirdly?

I was testing out my script and I thought of an idea to have a move I want to make, and the cylinder that fades out is supposed to happen while the twister and the black circle are increasing in size, so I put them in a for i loop. The weird thing is, is that first the black circle and twister just pop out of nowhere, the cylinder changes, and then the black circle and twister change.

Here's a GIF of what I mean: https://gyazo.com/408a6be6df739e9473763b3bf12f27c2

My script, don't mind the unused variables, I'll use them later once this problem is fixed:

local TS = game:GetService("TweenService")


game.ReplicatedStorage.ShadowMagic.ShadowR.OnServerEvent:Connect(function(plr)
	
	local char = plr.Character
	
	
	local Shockwave = game.Workspace.Shockwave:Clone()
	Shockwave.Parent = game.Workspace
	Shockwave.CFrame = plr.Character.Torso.CFrame
	Shockwave.Anchored = true
	Shockwave.CanCollide = false
	Shockwave.Transparency = 1
	Shockwave.Mesh.Scale = Vector3.new(0,0,0)
	
	local twister = game.Workspace.Twister:Clone()
	twister.Parent = game.Workspace
	twister.Size = Vector3.new(0,0,0)
	twister.CFrame = plr.Character.Torso.CFrame
	twister.Transparency = 1
	
	local bottom = workspace.ShadowCylinder:Clone()
	bottom.Size = Vector3.new(0.5,0,0)
	bottom.Anchored = true
	bottom.CanCollide = false
	bottom.CFrame = char.Torso.CFrame + Vector3.new(0,-2.5,0)
	bottom.Parent = workspace
	bottom.Orientation = Vector3.new(0,0,90)
	
	
	local Cylinder = bottom:Clone()
	Cylinder.Size = Vector3.new(0.5,20,20)
	Cylinder.Position = plr.Character.Torso.Position + Vector3.new(0,-2,0)
	Cylinder.Anchored = true
	Cylinder.CanCollide = false
	Cylinder.Transparency = 0.2
	Cylinder.Material = "SmoothPlastic"
	Cylinder.Parent = game.Workspace
	Cylinder.Name = "ShadCyl"
	
	
	
	
	
	
	for i = 1,20 do
		bottom.Size = bottom.Size + Vector3.new(0,1,1)
		
		
		twister.Size = twister.Size + Vector3.new(4.5,1,4.5)
		twister.Transparency = twister.Transparency - 0.0085
		
		if i == 10 then
			
			
			
		for i = 1,25 do
		
			Cylinder.Size = Cylinder.Size + Vector3.new(6,-2,-2)
			Cylinder.Transparency = Cylinder.Transparency + 0.05
			wait()
		
		
		
		end
	
			
			
			
		end
		
		
		
		
		
		
		
		
		
		
		
		wait()
	end
	
	local Cloud = game.ReplicatedStorage.ShadowMagic.Cloud:Clone()
	Cloud.Size = Vector3.new(0,0,0)
	
	
	for i = 0,1,.1 do
		
		Shockwave.Transparency = i
		Shockwave.Mesh.Scale  = Shockwave.Mesh.Scale + Vector3.new(3,.7,3)
		
		wait()
	end
	
	
	
	
	
	
	
	
	
	
end)