Agree with Bev and Mark. I think depending where you are located, when it is cold, cuttings from succulents outdoors does not seem to survive well, especially when weather has gone through a cycle of wet/cold/dry/cold. I have tried rescuing some leaves when they fall off during cold weather but they just die. So I just wait it out till spring and more consistent warm weather sets in. Now unless the plants are grown indoors, then the cuttings may have a better chance to survive, just get that cutting to callus, and just lay them on top of the soil, but continue to keep them warm and indoors.
