He places the powder in her hands, but Terezi is a little uncertain how she's supposed to use this. She assumes--correctly--that it's supposed to go on his face somehow, but the intricacies of paint and make-up application are not her forte. She frowns a little at the jar before lifting her attention up to Kurloz.

I don't think I understand... What am I supposed to do with this? I don't want to mess it up." It, being the paint that she's just carefully applied for him. It was pain-staking enough the first time. She really doesn't want to do it over again.