"I am 5 steps ahead of you already, Mr. Weasley." She tapped her wand on the drawings and they swirled into more traditional wizard robes. "Wand tap transformation. Small incantation with the wand tap, and presto!" She beamed at him. It was her own invention, and she was very proud.
She pulled up a work order and made some notations, concentrating on the figures she had written down about Percy's measurements and his preferences on cut and the fabric he liked. She nodded when she was satisfied and handed him back the updated sketch. "With the transition charm, I can also add a...stainproofing charm. Should prevent future incidents. If that suits?" She gave him a moment to look it over and approve, handing him the quill. "Feel free to make note of any adjustments there. I'll take some measurements to make sure we're accurate, and then we'll be all set."
She paused while he was looking over the paper and gave him a soft smile.