Making wearable hats out of models/meshes?

Ok, so I made some hats that I want the character to be able to wear, but I don't know how to do that and google isn't very much of a help either. The hats are models, but I could turn them into texture baked meshes if needed. How would I make a mesh/model wearable? There is no script but I don't know where else I should ask this.

All you need to do is upload your mesh to Roblox, upload the texture, and create an instance named Mesh. Create a TouchInterest. Add this script to the hat:

function onTouched(hit)
	if (hit.Parent:findFirstChild("Humanoid") ~= nil and debounce == true) then
		debounce = false
		h = Instance.new("Hat")
		p = Instance.new("Part")
		h.Name = "YourHatName"
		p.Parent = h
		p.Position = hit.Parent:findFirstChild("Head").Position
		p.Name = "Handle" 
		p.formFactor = 0
		p.Size = Vector3.new(0,-0.25,0) 
		p.BottomSurface = 0 
		p.TopSurface = 0 
		p.Locked = true 
		script.Parent.Mesh:clone().Parent = p
		h.Parent = hit.Parent
		h.AttachmentPos = Vector3.new(0,-0.25,0)
		wait(5)
		debounce = true
	end
end

script.Parent.Touched:connect(onTouched)

and then the hat should be on your head. Note: You need to make a Hat instance, put the mesh in the Handle inside your hat, then follow the steps. A model is harder, all I know is how to do it with a mesh.