Move the excess resin to the edge past the film then you can wipe it clean with a rag when it is wet. In the 5th pic on the post I have an old rag to wipe up "run over". Very little faring is needed. On repair work make sure the patch area is sanded / skuffed to hold the patch and most of all of clean of wax ect….

Object is a drier lay-up, compressed layers of cloth, and getting the air out. Side benefit it is pretty fare to your surface.

Thanks Jeremy maybe I have some of that old Navy SeeBee "Can Do" left in these old bones.