[Not Solved] Return/If + Shortening Script?

Okay, so this may seem like a big script, but it's rather simple to understand. Basically the function alone changes the transparency of an ImageLabel.

Firstly The problem I am having is with the returncode. I am using return so that it won't play the other transparencies in the if statements, otherwise it won't work. I'm pretty sure there is a way around this but I will also be having 6 cards in the 1 function, as you can see it gets really long, plus the script won't continue after the 1st set of if's in Card1

Secondly As you can see this script is getting rather long, especially as I will be adding 6 other 'Cardx's which is why I am asking if there is a way to shorten it. Here's the code:

function openChest(Player)
	if not debounce then
		debounce = true
			rotate(Lid, -Increment)
		end
	debounce = false
	
	Item = chooseItem():Clone()
	local chance = getChance(Item)
	
	local ChestGui = Player.PlayerGui:WaitForChild("ChestGui")
	local Card1 = ChestGui.Card1
	
		if chance <= 10 then
		Card1.Image = "http://www.roblox.com/asset/?id=" ..GoldCard	
		Card1.ImageTransparency = 0.8
		wait()
		Card1.ImageTransparency = 0.6
		wait()
		Card1.ImageTransparency = 0.4
		wait()
		Card1.ImageTransparency = 0.2
		wait()
		Card1.ImageTransparency = 0
		Item.Parent = Player.Backpack
	return;
end
		if chance <= 50 then
		Card1.Image = "http://www.roblox.com/asset/?id=" ..SilverCard
		Card1.ImageTransparency = 0.8
		wait()
		Card1.ImageTransparency = 0.6
		wait()
		Card1.ImageTransparency = 0.4
		wait()
		Card1.ImageTransparency = 0.2
		wait()
		Card1.ImageTransparency = 0
		Item.Parent = Player.Backpack
	return;
end
		if chance <= 100 then
		Card1.Image = "http://www.roblox.com/asset/?id=" ..BronzeCard
		Card1.ImageTransparency = 0.8
		wait()
		Card1.ImageTransparency = 0.6
		wait()
		Card1.ImageTransparency = 0.4
		wait()
		Card1.ImageTransparency = 0.2
		wait()
		Card1.ImageTransparency = 0
		Item.Parent = Player.Backpack
	return;
end
		
		Item = chooseItem():Clone()
		local chance = getChance(Item)
		
		local ChestGui = Player.PlayerGui:WaitForChild("ChestGui")
		local Card2 = ChestGui.Card2
	
		if chance <= 10 then
		Card2.Image = "http://www.roblox.com/asset/?id=" ..GoldCard	
		Card2.ImageTransparency = 0.8
		wait()
		Card2.ImageTransparency = 0.6
		wait()
		Card2.ImageTransparency = 0.4
		wait()
		Card2.ImageTransparency = 0.2
		wait()
		Card2.ImageTransparency = 0
		Item.Parent = Player.Backpack
	return;
end
		if chance <= 50 then
		Card2.Image = "http://www.roblox.com/asset/?id=" ..SilverCard
		Card2.ImageTransparency = 0.8
		wait()
		Card2.ImageTransparency = 0.6
		wait()
		Card2.ImageTransparency = 0.4
		wait()
		Card2.ImageTransparency = 0.2
		wait()
		Card2.ImageTransparency = 0
		Item.Parent = Player.Backpack
	return;
end
		if chance <= 100 then
		Card2.Image = "http://www.roblox.com/asset/?id=" ..BronzeCard
		Card2.ImageTransparency = 0.8
		wait()
		Card2.ImageTransparency = 0.6
		wait()
		Card2.ImageTransparency = 0.4
		wait()
		Card2.ImageTransparency = 0.2
		wait()
		Card2.ImageTransparency = 0
		Item.Parent = Player.Backpack
	return;
end
	Chest.Lid.ClickSensor:Destroy()
end

All help is much appreciated.

You can use elseifs to eliminate the returns. Like so:

if condition then
	--...
elseif condition2 then
	--...
end

For your second question, look into how tables work in Lua. If you make a table of cards and loop through it, you can shorten your code for all 6 cards.