well, you're right, but wrong. the biggest washers can't be mounted facing away from the bushes, because of their location. the bigger washers go directly on the sway bar and on the strut mount, and neither of these locations will give room for mounting upside down.
should look like this:
nut
smaller washer facing upward
bush
big washer facing upward
strut
big washer facing downward
bush
small washer facing downward, sitting on tab
||
||
small washer facing upward, sitting on tab
bush
big washer facing upward
swaybar
big washer facing downward
bush
small washer facing downward
nut
the washers should face the same way on either side of the bush.
doesn't really matter if you only have small washers, but the big ones have a ring on the centre which holds them in place on the swaybar or strut mount - optimal, but not absolutely neccessary