Given the small amount of milk used, any need to contact plastic wrap to the surface to prevent a skin?

I should also add, that actually that was a mistake in the recipe input. I accidentally chose teaspoon in the dropdown instead of cup because it was right below! Thanks for pointing it out and I've changed it. I actually like a skin on my pudding, so I don't cover them, but if you want to avoid a skin, you can put plastic wrap on the surface.

I would cover them but wouldn't allow the plastic wrap to come in contact with the surface of the pudding.