How do I add sprites to go along with this visual novel script?

I've come up with a script to make dialogue but I don't know how to add sprites along when dialogue appears.

Here's my script:

local dialogue = {"Hey there", ... }

local function displayText(text)
	script.Parent.Parent.TextPart.Text = text
end

local dialogueInSession = false
local mouseButtonConnection;
mouseButtonConnection = script.Parent.MouseButton1Click:Connect(function()
	if dialogueInSession then return end
	dialogueInSession = true
	for _, text in ipairs(dialogue) do
		displayText(text)
		script.Parent.MouseButton1Click:Wait()
	end
	dialogueInSession = false
	script.Parent.LocalScript.Disabled = true
	script.Parent.MouseButton1Click:Connect(function()
		script.Parent.Parent.rantaro4.Visible = false
		script.Parent.Parent.main.Visible = false
		script.Parent.Parent.TextPart.Visible = false
		script.Parent.Parent.rantaroname.Visible = false
	end)
end)

I don't know where to put any sprites to appear during any dialogue, so it would help if you give me tips how to do this.