[ Observing how Alvin goes about his work, in the case he needs help. Grabbing a blouse which needs to have a hem closed. ]
Here -- [ Signalling for him to look: a flap cut out of a back of a blouse, edges of which are folded and held down with pins ] If you want hems or whatever it is you're sewing to hold together, you might want to do a backstitch. [ Demonstrates! ] The longer it gets though, you'd want to hold the cloth in place with a few pins.
[ Briefly peeks up at him as she works. ] You into... extreme sports or something?