can't see what you are talking about but if the leaves didn't droop it's not too bad of damage. don't try to cut it so close. it's okay to leave a bit of petiole behind. the plant will seal up within 24-48 hours. no big deal. whatever damage you caused will grow back stronger. even if leaves droop still can heal. snapping a stem, taping it up to preserve shape and hold it together - it'll heal even in this context, which is worse than what i cannot quite see here.