To think if you're going to sell makeup you should have a basic understanding of how to apply it?

[MadJeffBarn]

I have about 6 younique presenters on my Facebook. All of them message me at least monthly, asking me to buy from them, and constant selfies advertising their wares. But only 1 of them knows how to put it on! I have nothing against people trying to make a little extra money, but I cant help but think if you're going to constantly advertise it you should have a basic understanding of how to do it? I'm not amazing at makeup but it's passable and I do love makeup (just lack the money to afford lots of it to practise with)